Marine Weather and Tide Forecast for Kaumakani, HI
May 18, 2024 4:02 AM HST (14:02 UTC) Change Location
 | Sunrise 5:51 AM Sunset 7:06 PM Moonrise 3:22 PM Moonset 2:59 AM |
PHZ112 Kauai Leeward Waters- 329 Am Hst Sat May 18 2024
Today - South southeast winds 15 to 20 knots. Seas 5 to 7 feet. Wave detail: southeast 5 feet at 7 seconds, northwest 4 feet at 11 seconds and south 3 feet at 15 seconds. Heavy showers with isolated Thunderstorms.
Tonight - Southeast winds 15 to 20 knots. Seas 5 to 7 feet. Wave detail: southeast 5 feet at 6 seconds, northwest 3 feet at 10 seconds and south 3 feet at 19 seconds. Occasional showers.
Sunday - Southeast winds 15 to 20 knots, becoming east southeast 10 to 15 knots in the afternoon. Seas 5 to 6 feet. Wave detail: southeast 5 feet at 6 seconds, northwest 3 feet at 10 seconds and south 3 feet at 17 seconds. Numerous showers, mainly in the morning.
Sunday night - Southeast winds to 10 knots. Seas 5 to 6 feet. Wave detail: southeast 5 feet at 7 seconds and northwest 3 feet at 10 seconds. Scattered showers, mainly in the evening.
Monday - East southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave detail: southeast 4 feet at 6 seconds and northwest 3 feet at 9 seconds. Isolated showers.
Monday night - East winds 10 to 15 knots. Seas 4 to 5 feet. Wave detail: southeast 4 feet at 7 seconds. Isolated showers.
Tuesday - East winds 15 to 20 knots. Seas 4 to 5 feet. Wave detail: east southeast 5 feet at 7 seconds. Isolated showers.
Wednesday - East winds 10 to 15 knots, rising to 15 to 20 knots. Seas 4 to 5 feet. Wave detail: east 5 feet at 7 seconds. Isolated showers.
winds and seas higher in and near tstms.
winds and seas higher in and near tstms.
PHZ100 329 Am Hst Sat May 18 2024
Synopsis for hawaiian coastal waters - A kona low will remain far northwest of the area today, then slowly lift northward and away from the region Sunday through early next week. A surface ridge will build north of the state next week.
FXHW60 PHFO 180658 AFDHFO
Area Forecast Discussion National Weather Service Honolulu HI 858 PM HST Fri May 17 2024
SYNOPSIS
A kona low northwest of the state will continue drawing unstable tropical moisture northward over Kauai County through Saturday.
The kona low will begin slowly drift north away from the state this weekend with improving trends spreading from east to west, though enhanced rainfall may linger over Kauai and Niihau through Saturday night. By Monday all islands will see an improvement in weather conditions as easterly trade winds return.
DISCUSSION
A kona low remains centered roughly 750 nm northwest of Kauai and a trough orientated northeast to southwest near Kauai. Latest satellite imagery shows a broad broken cloud band extending from the northeast to southeast over Kauai and Oahu and some mid- level and high clouds streaming from west to east over the rest of the island chain. Radar imagery earlier this evening showed the rainband that brought significant rainfall to Oahu Thursday and earlier this morning has quickly moved north of Kauai with some rainfall gauges picking up over a quarter of an inch an hour.
Currently radar imagery shows rainfall activity has quited down with scattered moderate to light showers building along the Koolau range this evening and moving from the south to north near Kauai.
The Flood Watch for Kauai County remains in effect through Saturday night as hi-res models continue to show a possibility for heavy rainfall to build back east over Kauai Saturday morning.
The main consideration for the island of Kauai continues to be how long the band lingers over the island before moving off to the northwest as the kona low exits the region. While consensus is that conditions will begin to improve Saturday night, the flooding concerns could linger a bit longer should this be a slower transition. Models also are still hinting that one last moisture surge back towards Oahu is possible on Saturday night, but confidence remains low in this occurring at this time.
High pressure will slowly build into the region this weekend as the kona low exits the pattern to the north. Expect more stabilizing trends with decreasing showers as east to southeast winds spread across the state. Likely by Sunday, the moderate to heavy rainfall threat will diminish over Kauai as more stable conditions fill in across the state.
More typical easterly trade winds will return across the state from Monday onward with only brief passing showers in the forecast favoring the typical windward and mountain areas through the middle of next week.
AVIATION
An unstable tropical environment with a low level trough over Kauai will keep MVFR conditions with brief IFR conditions possible in moderate to locally heavy showers lasting into Saturday.
Lingering instability near Oahu will keep periods of MVFR conditions in showers favoring the eastern slopes. Most islands will see light large scale southeast to south winds interacting with overnight land and daytime sea breezes over each island through the weekend. Clouds and showers will build over island mountain and interior sections during the day with some clearing at night for most islands. Kauai will be the exception to this rule as a low level trough will enhance clouds and showers for the next 24 hours.
AIRMET Sierra in effect for mountain obscurations over Kauai, Oahu, and the eastern slopes of the Big Island.
Occasional light rime icing is expected from Kauai to Oahu in layer 140-FL250.
MARINE
Fresh to locally strong south to southeast winds associated with a kona low north-northwest of the state will persist into Saturday.
A shift out of the east to southeast direction is expected over the weekend through early next week as it lifts northward and away from the area and the ridge begins to build north of the area. A Small Craft Advisory remains in effect for the Windward and Leeward Big Island waters (Hamakua Coast and waters near South Point) through early Saturday. As we trend back to a more typical trade wind pattern by the end of the weekend, a SCA may be needed for the windier locations around Maui County and the Big Island.
Surf along south facing shores will remain up through early next week due to overlapping, long-period south-southwest swells. The first swell that peaked today will hold around the advisory level into Saturday before briefly lowering. The short-period wind chop added from the southerly winds will linger into Saturday, then ease as we transition back to an east to southeast wind regime by Sunday. This will translate to cleaner surf conditions. A fresh, long-period south-southwest swell will fill in through the day Sunday, then peak slightly lower than the current swell early next week before easing Tuesday through midweek.
Surf along north facing shores will steadily lower through the weekend, with a return to a more typical pattern for this time of year next week.
Surf along east facing shores will remain well below average through the weekend. An upward trend is possible next week as the trades return locally and far upstream over the eastern Pacific.
HFO WATCHES/WARNINGS/ADVISORIES
Flood Watch through late Saturday night for Niihau-Kauai-
High Surf Advisory until 6 PM HST Saturday for Niihau-Kauai Leeward-Waianae Coast-Kahoolawe-Maui Leeward West-Kona-Kauai South-East Honolulu-Honolulu Metro-Ewa Plain-Molokai Southeast- Molokai Leeward South-Lanai Leeward-Lanai South-Maui Central Valley South-South Maui/Upcountry-South Haleakala-Big Island South-Big Island Southeast.
Small Craft Advisory until 6 AM HST Saturday for Big Island Windward Waters-Big Island Leeward Waters.
Area Forecast Discussion National Weather Service Honolulu HI 858 PM HST Fri May 17 2024
SYNOPSIS
A kona low northwest of the state will continue drawing unstable tropical moisture northward over Kauai County through Saturday.
The kona low will begin slowly drift north away from the state this weekend with improving trends spreading from east to west, though enhanced rainfall may linger over Kauai and Niihau through Saturday night. By Monday all islands will see an improvement in weather conditions as easterly trade winds return.
DISCUSSION
A kona low remains centered roughly 750 nm northwest of Kauai and a trough orientated northeast to southwest near Kauai. Latest satellite imagery shows a broad broken cloud band extending from the northeast to southeast over Kauai and Oahu and some mid- level and high clouds streaming from west to east over the rest of the island chain. Radar imagery earlier this evening showed the rainband that brought significant rainfall to Oahu Thursday and earlier this morning has quickly moved north of Kauai with some rainfall gauges picking up over a quarter of an inch an hour.
Currently radar imagery shows rainfall activity has quited down with scattered moderate to light showers building along the Koolau range this evening and moving from the south to north near Kauai.
The Flood Watch for Kauai County remains in effect through Saturday night as hi-res models continue to show a possibility for heavy rainfall to build back east over Kauai Saturday morning.
The main consideration for the island of Kauai continues to be how long the band lingers over the island before moving off to the northwest as the kona low exits the region. While consensus is that conditions will begin to improve Saturday night, the flooding concerns could linger a bit longer should this be a slower transition. Models also are still hinting that one last moisture surge back towards Oahu is possible on Saturday night, but confidence remains low in this occurring at this time.
High pressure will slowly build into the region this weekend as the kona low exits the pattern to the north. Expect more stabilizing trends with decreasing showers as east to southeast winds spread across the state. Likely by Sunday, the moderate to heavy rainfall threat will diminish over Kauai as more stable conditions fill in across the state.
More typical easterly trade winds will return across the state from Monday onward with only brief passing showers in the forecast favoring the typical windward and mountain areas through the middle of next week.
AVIATION
An unstable tropical environment with a low level trough over Kauai will keep MVFR conditions with brief IFR conditions possible in moderate to locally heavy showers lasting into Saturday.
Lingering instability near Oahu will keep periods of MVFR conditions in showers favoring the eastern slopes. Most islands will see light large scale southeast to south winds interacting with overnight land and daytime sea breezes over each island through the weekend. Clouds and showers will build over island mountain and interior sections during the day with some clearing at night for most islands. Kauai will be the exception to this rule as a low level trough will enhance clouds and showers for the next 24 hours.
AIRMET Sierra in effect for mountain obscurations over Kauai, Oahu, and the eastern slopes of the Big Island.
Occasional light rime icing is expected from Kauai to Oahu in layer 140-FL250.
MARINE
Fresh to locally strong south to southeast winds associated with a kona low north-northwest of the state will persist into Saturday.
A shift out of the east to southeast direction is expected over the weekend through early next week as it lifts northward and away from the area and the ridge begins to build north of the area. A Small Craft Advisory remains in effect for the Windward and Leeward Big Island waters (Hamakua Coast and waters near South Point) through early Saturday. As we trend back to a more typical trade wind pattern by the end of the weekend, a SCA may be needed for the windier locations around Maui County and the Big Island.
Surf along south facing shores will remain up through early next week due to overlapping, long-period south-southwest swells. The first swell that peaked today will hold around the advisory level into Saturday before briefly lowering. The short-period wind chop added from the southerly winds will linger into Saturday, then ease as we transition back to an east to southeast wind regime by Sunday. This will translate to cleaner surf conditions. A fresh, long-period south-southwest swell will fill in through the day Sunday, then peak slightly lower than the current swell early next week before easing Tuesday through midweek.
Surf along north facing shores will steadily lower through the weekend, with a return to a more typical pattern for this time of year next week.
Surf along east facing shores will remain well below average through the weekend. An upward trend is possible next week as the trades return locally and far upstream over the eastern Pacific.
HFO WATCHES/WARNINGS/ADVISORIES
Flood Watch through late Saturday night for Niihau-Kauai-
High Surf Advisory until 6 PM HST Saturday for Niihau-Kauai Leeward-Waianae Coast-Kahoolawe-Maui Leeward West-Kona-Kauai South-East Honolulu-Honolulu Metro-Ewa Plain-Molokai Southeast- Molokai Leeward South-Lanai Leeward-Lanai South-Maui Central Valley South-South Maui/Upcountry-South Haleakala-Big Island South-Big Island Southeast.
Small Craft Advisory until 6 AM HST Saturday for Big Island Windward Waters-Big Island Leeward Waters.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| NWWH1 - 1611400 - Nawiliwili, HI | 15 mi | 45 min | SSE 5.1G | 29.94 | ||||
| 51208 | 26 mi | 37 min | 77°F | 5 ft |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| PHBK BARKING SANDS PMRF,HI | 11 sm | 52 min | SSE 11G21 | 10 sm | Mostly Cloudy | 29.91 | ||||
| PHLI LIHUE,HI | 16 sm | 69 min | S 05 | 10 sm | Overcast | 75°F | 73°F | 94% | 29.94 |
Hanamaulu Bay
Click for Map
Sat -- 12:01 AM HST 1.05 feet High Tide
Sat -- 02:57 AM HST Moonset
Sat -- 05:56 AM HST Sunrise
Sat -- 06:35 AM HST -0.09 feet Low Tide
Sat -- 01:30 PM HST 1.24 feet High Tide
Sat -- 03:20 PM HST Moonrise
Sat -- 07:11 PM HST Sunset
Sat -- 07:27 PM HST 0.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:01 AM HST 1.05 feet High Tide
Sat -- 02:57 AM HST Moonset
Sat -- 05:56 AM HST Sunrise
Sat -- 06:35 AM HST -0.09 feet Low Tide
Sat -- 01:30 PM HST 1.24 feet High Tide
Sat -- 03:20 PM HST Moonrise
Sat -- 07:11 PM HST Sunset
Sat -- 07:27 PM HST 0.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Hanamaulu Bay, Kauai Island, Hawaii, Tide feet
| 12 am |
| 1 |
| 1 am |
| 1 |
| 2 am |
| 0.8 |
| 3 am |
| 0.6 |
| 4 am |
| 0.3 |
| 5 am |
| 0.1 |
| 6 am |
| -0.1 |
| 7 am |
| -0.1 |
| 8 am |
| 0 |
| 9 am |
| 0.3 |
| 10 am |
| 0.6 |
| 11 am |
| 0.9 |
| 12 pm |
| 1.1 |
| 1 pm |
| 1.2 |
| 2 pm |
| 1.2 |
| 3 pm |
| 1.1 |
| 4 pm |
| 0.9 |
| 5 pm |
| 0.7 |
| 6 pm |
| 0.5 |
| 7 pm |
| 0.4 |
| 8 pm |
| 0.4 |
| 9 pm |
| 0.5 |
| 10 pm |
| 0.7 |
| 11 pm |
| 0.8 |
Hanalei Bay
Click for Map
Sat -- 02:58 AM HST Moonset
Sat -- 05:09 AM HST -0.09 feet Low Tide
Sat -- 05:56 AM HST Sunrise
Sat -- 12:19 PM HST 1.34 feet High Tide
Sat -- 03:21 PM HST Moonrise
Sat -- 06:01 PM HST 0.42 feet Low Tide
Sat -- 07:12 PM HST Sunset
Sat -- 11:27 PM HST 1.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 02:58 AM HST Moonset
Sat -- 05:09 AM HST -0.09 feet Low Tide
Sat -- 05:56 AM HST Sunrise
Sat -- 12:19 PM HST 1.34 feet High Tide
Sat -- 03:21 PM HST Moonrise
Sat -- 06:01 PM HST 0.42 feet Low Tide
Sat -- 07:12 PM HST Sunset
Sat -- 11:27 PM HST 1.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Hanalei Bay, Kauai Island, Hawaii, Tide feet
| 12 am |
| 1.1 |
| 1 am |
| 0.8 |
| 2 am |
| 0.6 |
| 3 am |
| 0.3 |
| 4 am |
| 0 |
| 5 am |
| -0.1 |
| 6 am |
| -0 |
| 7 am |
| 0.1 |
| 8 am |
| 0.4 |
| 9 am |
| 0.7 |
| 10 am |
| 1 |
| 11 am |
| 1.2 |
| 12 pm |
| 1.3 |
| 1 pm |
| 1.3 |
| 2 pm |
| 1.1 |
| 3 pm |
| 0.9 |
| 4 pm |
| 0.7 |
| 5 pm |
| 0.5 |
| 6 pm |
| 0.4 |
| 7 pm |
| 0.5 |
| 8 pm |
| 0.6 |
| 9 pm |
| 0.8 |
| 10 pm |
| 0.9 |
| 11 pm |
| 1 |
South,Kauai/Honolulu,HI
NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE