Sea weather in Kapaau in Hawaii All the beach weather in Kapaau

All the essential weather information for enjoying the beach in Kapaau in Hawaii, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Kapaau over the next 7 days?

Discover the best moment to go to the beach in Kapaau in Hawaii this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Kapaau. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Sunday 14 December 202570°F to 77°Frecommended
Monday 15 December 202572°F to 76°Frecommended
Tuesday 16 December 202572°F to 76°Frecommended
Wednesday 17 December 202572°F to 76°Frecommended
Thursday 18 December 202572°F to 76°Frecommended
Friday 19 December 202572°F to 76°Frecommended
Saturday 20 December 202572°F to 76°Frecommended

Sea Weather: Your daily and hourly sea weather in Kapaau

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 06:51 and will set at 17:46 on the beach(es) of Kapaau. The outside temperature will be a high of 77°F t and a low of 70°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 6.2mph km/h (with gusts up to 10.6mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature22°C (72°F)22°C (71°F)22°C (72°F)24°C (75°F)21°C (70°F)24°C (75°F)23°C (73°F)23°C (73°F)
Perceived temperature25°C (76°F)22°C (71°F)25°C (76°F)26°C (78°F)21°C (70°F)26°C (78°F)25°C (77°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity80%84%79%68%66%70%80%82%
Barometric pressure1014 hPa1013 hPa1013 hPa1015 hPa1013 hPa1012 hPa1013 hPa1015 hPa
Cloud cover5%79%3%4%6%88%74%73%
Heat index25°C (76°F)24°C (76°F)25°C (76°F)26°C (78°F)24°C (76°F)26°C (78°F)25°C (77°F)25°C (77°F)
Dew point19°C (66°F)19°C (66°F)18°C (65°F)18°C (64°F)15°C (58°F)18°C (65°F)19°C (66°F)19°C (67°F)
Wind
Speed9km/h (6mph)10km/h (6mph)10km/h (6mph)5km/h (3mph)4km/h (3mph)5km/h (3mph)5km/h (3mph)5km/h (3mph)
Gusts15km/h (9mph)16km/h (10mph)17km/h (11mph)6km/h (4mph)9km/h (6mph)8km/h (5mph)9km/h (5mph)7km/h (4mph)
Direction 210°
SSW
216°
SW
199°
SSW
184°
S
263°
W
244°
WSW
210°
SSW
201°
SSW
Wind chill22°C (72°F)22°C (71°F)22°C (72°F)24°C (75°F)21°C (70°F)24°C (75°F)23°C (73°F)23°C (73°F)
Waves
Height1.2m (3.8ft)1.1m (3.5ft)1.0m (3.4ft)1.0m (3.2ft)0.9m (3.1ft)0.9m (3.1ft)1.0m (3.3ft)1.1m (3.5ft)
Direction 354°
N
350°
N
351°
N
352°
N
354°
N
356°
N
352°
N
340°
NNW
Period10.7 sec.10.2 sec.10.0 sec.9.9 sec.9.8 sec.9.6 sec.8.0 sec.9.1 sec.
Significant height0.4m (1.3ft)1.1m (3.6ft)1.1m (3.6ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.7m (2.3ft)0.6m (2ft)
Sea water temperature
Water temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 06:51 and will set at 17:47 on the beach(es) of Kapaau. The outside temperature will be a high of 76°F t and a low of 72°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 8.1mph km/h (with gusts up to 11.8mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature22°C (72°F)22°C (72°F)22°C (72°F)24°C (74°F)23°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)
Perceived temperature25°C (76°F)25°C (76°F)25°C (76°F)25°C (78°F)25°C (78°F)25°C (77°F)25°C (77°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%82%80%76%75%76%81%83%
Barometric pressure1015 hPa1015 hPa1016 hPa1017 hPa1015 hPa1014 hPa1016 hPa1016 hPa
Cloud cover82%76%23%25%12%83%74%26%
Heat index25°C (76°F)25°C (76°F)25°C (76°F)25°C (78°F)25°C (78°F)25°C (77°F)25°C (77°F)25°C (77°F)
Dew point19°C (67°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)20°C (68°F)
Wind
Speed3km/h (2mph)7km/h (4mph)3km/h (2mph)4km/h (2mph)8km/h (5mph)10km/h (6mph)13km/h (8mph)10km/h (6mph)
Gusts4km/h (2mph)11km/h (7mph)5km/h (3mph)5km/h (3mph)11km/h (7mph)14km/h (9mph)19km/h (12mph)14km/h (9mph)
Direction 213°
SSW
233°
SW
192°
SSW
123°
ESE
55°
NE
65°
ENE
82°
E
97°
E
Wind chill22°C (72°F)22°C (72°F)22°C (72°F)24°C (74°F)23°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)
Waves
Height1.1m (3.7ft)1.2m (3.8ft)1.2m (4.1ft)1.4m (4.5ft)1.5m (5.0ft)1.6m (5.3ft)1.7m (5.6ft)1.7m (5.7ft)
Direction 332°
NNW
340°
NNW
342°
NNW
344°
NNW
349°
NNW
355°
N
238°
WSW
80°
E
Period12.3 sec.13.1 sec.13.0 sec.13.8 sec.14.7 sec.14.8 sec.14.5 sec.14.1 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)0.7m (2.3ft)0.6m (2ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 06:52 and will set at 17:47 on the beach(es) of Kapaau. The outside temperature will be a high of 76°F t and a low of 72°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 10.6mph km/h (with gusts up to 14.9mph). Wave height will be up to 5.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (73°F)23°C (73°F)23°C (73°F)24°C (75°F)24°C (74°F)24°C (75°F)22°C (72°F)23°C (73°F)
Perceived temperature25°C (77°F)25°C (77°F)25°C (77°F)26°C (78°F)25°C (78°F)26°C (78°F)25°C (76°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%85%80%73%71%71%80%83%
Barometric pressure1015 hPa1014 hPa1016 hPa1017 hPa1015 hPa1013 hPa1014 hPa1015 hPa
Cloud cover32%76%72%73%7%82%7%8%
Heat index25°C (77°F)25°C (77°F)25°C (77°F)26°C (78°F)25°C (78°F)26°C (78°F)25°C (76°F)25°C (77°F)
Dew point20°C (67°F)20°C (68°F)19°C (66°F)19°C (66°F)18°C (64°F)18°C (65°F)18°C (65°F)20°C (67°F)
Wind
Speed7km/h (4mph)17km/h (10mph)5km/h (3mph)1km/h (1mph)5km/h (3mph)7km/h (4mph)3km/h (2mph)10km/h (6mph)
Gusts10km/h (6mph)24km/h (15mph)8km/h (5mph)2km/h (1mph)7km/h (4mph)10km/h (6mph)5km/h (3mph)16km/h (10mph)
Direction 225°
SW
227°
SW
228°
SW
300°
WNW
27°
NNE
79°
ENE
168°
SSE
248°
WSW
Wind chill23°C (73°F)23°C (73°F)23°C (73°F)24°C (75°F)24°C (74°F)24°C (75°F)22°C (72°F)23°C (73°F)
Waves
Height1.7m (5.6ft)1.8m (5.8ft)1.7m (5.6ft)1.6m (5.3ft)1.6m (5.2ft)1.6m (5.3ft)1.6m (5.3ft)1.6m (5.2ft)
Direction 27°
NNE
359°
N
359°
N
359°
N
359°
N
358°
N
358°
N
359°
N
Period14.0 sec.13.5 sec.13.4 sec.13.2 sec.13.1 sec.12.8 sec.12.4 sec.12.2 sec.
Significant height0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.7m (2.3ft)0.6m (2ft)0.3m (1ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 06:53 and will set at 17:48 on the beach(es) of Kapaau. The outside temperature will be a high of 76°F t and a low of 72°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 6.8mph km/h (with gusts up to 10.6mph). Wave height will be up to 5.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (73°F)22°C (72°F)22°C (72°F)24°C (74°F)24°C (75°F)24°C (74°F)23°C (73°F)23°C (73°F)
Perceived temperature25°C (77°F)25°C (76°F)25°C (76°F)25°C (78°F)26°C (78°F)25°C (78°F)25°C (77°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%83%84%76%73%73%79%81%
Barometric pressure1014 hPa1014 hPa1014 hPa1016 hPa1014 hPa1013 hPa1014 hPa1015 hPa
Cloud cover7%83%84%24%76%89%59%52%
Heat index25°C (77°F)25°C (76°F)25°C (76°F)25°C (78°F)26°C (78°F)25°C (78°F)25°C (77°F)25°C (77°F)
Dew point20°C (67°F)19°C (66°F)19°C (67°F)19°C (66°F)19°C (65°F)19°C (65°F)19°C (66°F)20°C (67°F)
Wind
Speed11km/h (7mph)2km/h (1mph)7km/h (4mph)4km/h (3mph)8km/h (5mph)4km/h (2mph)4km/h (3mph)4km/h (2mph)
Gusts17km/h (10mph)3km/h (2mph)10km/h (6mph)6km/h (3mph)11km/h (7mph)5km/h (3mph)6km/h (4mph)5km/h (3mph)
Direction 237°
WSW
79°
E
82°
E
140°
SE
314°
NW
292°
WNW
213°
SSW
214°
SW
Wind chill23°C (73°F)22°C (72°F)22°C (72°F)24°C (74°F)24°C (75°F)24°C (74°F)23°C (73°F)23°C (73°F)
Waves
Height1.5m (5.1ft)1.6m (5.1ft)1.6m (5.1ft)1.5m (5.0ft)1.5m (5.0ft)1.5m (5.1ft)1.5m (5.0ft)1.5m (4.9ft)
Direction 240°
WSW
357°
N
356°
N
357°
N
357°
N
357°
N
355°
N
350°
N
Period12.2 sec.12.7 sec.13.0 sec.13.1 sec.13.1 sec.11.4 sec.9.3 sec.8.6 sec.
Significant height0.3m (1ft)0.3m (1ft)0.3m (1ft)0.3m (1ft)0.4m (1.3ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 06:53 and will set at 17:48 on the beach(es) of Kapaau. The outside temperature will be a high of 76°F t and a low of 72°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 5.6mph km/h (with gusts up to 8.1mph). Wave height will be up to 4.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (73°F)23°C (73°F)22°C (72°F)23°C (74°F)23°C (73°F)23°C (73°F)22°C (72°F)23°C (73°F)
Perceived temperature25°C (77°F)25°C (77°F)25°C (76°F)25°C (78°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%82%81%76%74%75%77%76%
Barometric pressure1014 hPa1013 hPa1014 hPa1015 hPa1015 hPa1013 hPa1014 hPa1016 hPa
Cloud cover51%82%89%16%82%84%15%15%
Heat index25°C (77°F)25°C (77°F)25°C (76°F)25°C (78°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)
Dew point20°C (68°F)20°C (67°F)19°C (66°F)19°C (66°F)18°C (65°F)18°C (65°F)18°C (64°F)18°C (65°F)
Wind
Speed6km/h (4mph)9km/h (5mph)5km/h (3mph)5km/h (3mph)7km/h (4mph)5km/h (3mph)5km/h (3mph)6km/h (4mph)
Gusts9km/h (6mph)13km/h (8mph)7km/h (5mph)6km/h (4mph)10km/h (6mph)7km/h (4mph)8km/h (5mph)9km/h (6mph)
Direction 239°
WSW
224°
SW
170°
S
78°
ENE

N
357°
N
25°
NNE
53°
NE
Wind chill23°C (73°F)23°C (73°F)22°C (72°F)23°C (74°F)23°C (73°F)23°C (73°F)22°C (72°F)23°C (73°F)
Waves
Height1.4m (4.7ft)1.4m (4.5ft)1.4m (4.4ft)1.3m (4.4ft)1.3m (4.4ft)1.3m (4.4ft)1.4m (4.5ft)1.4m (4.5ft)
Direction 347°
NNW
348°
NNW
349°
N
351°
N
351°
N
352°
N
354°
N
353°
N
Period9.8 sec.12.6 sec.12.3 sec.12.2 sec.12.3 sec.12.7 sec.11.4 sec.10.9 sec.
Significant height0.6m (2ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 06:54 and will set at 17:49 on the beach(es) of Kapaau. The outside temperature will be a high of 76°F t and a low of 72°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 8.7mph km/h (with gusts up to 13.1mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (73°F)23°C (73°F)23°C (73°F)24°C (74°F)24°C (76°F)24°C (75°F)23°C (74°F)23°C (74°F)
Perceived temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (78°F)26°C (79°F)26°C (78°F)25°C (78°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%81%79%74%72%75%80%84%
Barometric pressure1015 hPa1015 hPa1015 hPa1016 hPa1015 hPa1014 hPa1014 hPa1016 hPa
Cloud cover15%16%16%12%12%15%13%14%
Heat index25°C (77°F)25°C (77°F)25°C (77°F)25°C (78°F)26°C (79°F)26°C (78°F)25°C (78°F)25°C (77°F)
Dew point19°C (67°F)19°C (66°F)19°C (66°F)19°C (65°F)19°C (66°F)19°C (66°F)20°C (67°F)20°C (68°F)
Wind
Speed4km/h (3mph)2km/h (1mph)4km/h (2mph)4km/h (3mph)8km/h (5mph)14km/h (9mph)13km/h (8mph)8km/h (5mph)
Gusts7km/h (4mph)3km/h (2mph)5km/h (3mph)6km/h (4mph)11km/h (7mph)21km/h (13mph)21km/h (13mph)13km/h (8mph)
Direction 358°
N
234°
SW
134°
SE
131°
SE
78°
ENE
86°
E
100°
E
133°
SE
Wind chill23°C (73°F)23°C (73°F)23°C (73°F)24°C (74°F)24°C (76°F)24°C (75°F)23°C (74°F)23°C (74°F)
Waves
Height1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.5m (4.9ft)1.5m (4.9ft)1.4m (4.6ft)1.4m (4.6ft)1.5m (4.9ft)
Direction 352°
N
352°
N
352°
N
351°
N
349°
NNW
349°
NNW
350°
N
351°
N
Period10.7 sec.9.8 sec.12.3 sec.12.1 sec.11.9 sec.11.8 sec.11.5 sec.11.2 sec.
Significant height0.7m (2.3ft)0.5m (1.6ft)1.1m (3.6ft)1.1m (3.6ft)1.2m (3.9ft)1.1m (3.6ft)0.5m (1.6ft)0.6m (2ft)
Sea water temperature
Water temperature23°C (73°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 06:54 and will set at 17:49 on the beach(es) of Kapaau. The outside temperature will be a high of 76°F t and a low of 72°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 11.8mph km/h (with gusts up to 16.8mph). Wave height will be up to 5.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (73°F)22°C (72°F)22°C (72°F)23°C (74°F)24°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)
Perceived temperature25°C (77°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (78°F)25°C (78°F)25°C (77°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%83%81%77%76%79%83%85%
Barometric pressure1016 hPa1016 hPa1016 hPa1017 hPa1015 hPa1014 hPa1015 hPa1016 hPa
Cloud cover11%9%8%7%7%20%42%45%
Heat index25°C (77°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (78°F)25°C (78°F)25°C (77°F)25°C (77°F)
Dew point20°C (67°F)19°C (67°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (67°F)20°C (68°F)20°C (68°F)
Wind
Speed5km/h (3mph)6km/h (4mph)7km/h (4mph)11km/h (7mph)17km/h (11mph)17km/h (11mph)17km/h (11mph)19km/h (12mph)
Gusts8km/h (5mph)10km/h (6mph)10km/h (6mph)16km/h (10mph)24km/h (15mph)25km/h (15mph)24km/h (15mph)27km/h (17mph)
Direction 182°
S
215°
SW
170°
S
95°
E
77°
ENE
80°
E
89°
E
87°
E
Wind chill23°C (73°F)22°C (72°F)22°C (72°F)23°C (74°F)24°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)
Waves
Height1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)1.6m (5.2ft)1.6m (5.2ft)1.6m (5.2ft)1.6m (5.2ft)
Direction 351°
N
351°
N
350°
N
348°
NNW
348°
NNW
352°
N
358°
N
358°
N
Period11.1 sec.11.2 sec.11.3 sec.11.6 sec.11.7 sec.11.7 sec.11.7 sec.11.5 sec.
Significant height0.6m (2ft)0.8m (2.6ft)0.4m (1.3ft)0.6m (2ft)0.8m (2.6ft)1.0m (3.3ft)0.9m (3ft)0.6m (2ft)
Sea water temperature
Water temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

Change units