Sea weather in Koloa in Hawaii All the beach weather in Koloa

All the essential weather information for enjoying the beach in Koloa 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 Koloa over the next 7 days?

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

Date Outside temp. Our opinion
Saturday 18 July 202672°F to 79°Fdiscouraged
Sunday 19 July 202672°F to 77°Fdiscouraged
Monday 20 July 202670°F to 77°Fdiscouraged
Tuesday 21 July 202672°F to 77°Fdiscouraged
Wednesday 22 July 202674°F to 77°Fdiscouraged
Thursday 23 July 202676°F to 77°Fdiscouraged
Friday 24 July 202672°F to 77°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Koloa

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 06:05 and will set at 19:23 on the beach(es) of Koloa. The outside temperature will be a high of 79°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 20.5mph km/h (with gusts up to 28mph). Wave height will be up to 5.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (78°F)22°C (72°F)24°C (75°F)24°C (76°F)25°C (76°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)25°C (76°F)25°C (78°F)26°C (79°F)27°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%84%83%79%74%73%76%77%
Barometric pressure1016 hPa1015 hPa1016 hPa1017 hPa1017 hPa1016 hPa1016 hPa1018 hPa
Cloud cover78%57%57%83%3%78%15%38%
Heat index27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)25°C (76°F)25°C (78°F)26°C (79°F)27°C (80°F)
Dew point22°C (72°F)22°C (72°F)22°C (71°F)22°C (71°F)17°C (63°F)19°C (65°F)20°C (68°F)20°C (69°F)
Wind
Speed30km/h (18mph)28km/h (18mph)29km/h (18mph)31km/h (19mph)30km/h (19mph)31km/h (19mph)33km/h (21mph)32km/h (20mph)
Gusts41km/h (25mph)39km/h (24mph)40km/h (25mph)41km/h (25mph)37km/h (23mph)33km/h (20mph)36km/h (22mph)45km/h (28mph)
Direction 63°
ENE
67°
ENE
67°
ENE
70°
ENE
70°
ENE
66°
ENE
63°
ENE
61°
ENE
Wind chill25°C (77°F)25°C (77°F)25°C (77°F)25°C (78°F)22°C (72°F)24°C (75°F)24°C (76°F)25°C (76°F)
Waves
Height1.5m (4.8ft)1.4m (4.7ft)1.3m (4.4ft)1.4m (4.6ft)1.4m (4.7ft)1.4m (4.8ft)1.5m (5.1ft)1.6m (5.3ft)
Direction 93°
E
95°
E
164°
SSE
102°
ESE
98°
E
112°
ESE
111°
ESE
105°
ESE
Period7.2 sec.6.9 sec.6.6 sec.6.5 sec.10.6 sec.8.1 sec.7.8 sec.7.7 sec.
Significant height1.1m (3.6ft)1.0m (3.3ft)1.2m (3.9ft)1.3m (4.3ft)1.2m (3.9ft)1.2m (3.9ft)1.4m (4.6ft)1.3m (4.3ft)
Sea water temperature
Water temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 06:05 and will set at 19:23 on the beach(es) of Koloa. The outside temperature will be a high of 77°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 19.3mph km/h (with gusts up to 29.2mph). Wave height will be up to 5.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (76°F)24°C (76°F)24°C (76°F)25°C (76°F)22°C (71°F)23°C (73°F)24°C (76°F)24°C (76°F)
Perceived temperature26°C (80°F)26°C (79°F)26°C (79°F)27°C (80°F)22°C (71°F)25°C (77°F)26°C (79°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%71%74%75%69%71%70%72%
Barometric pressure1018 hPa1016 hPa1016 hPa1017 hPa1017 hPa1015 hPa1015 hPa1017 hPa
Cloud cover79%61%38%52%9%89%0%6%
Heat index26°C (80°F)26°C (79°F)26°C (79°F)27°C (80°F)24°C (76°F)25°C (77°F)26°C (79°F)26°C (79°F)
Dew point20°C (68°F)19°C (66°F)19°C (67°F)20°C (68°F)16°C (60°F)17°C (63°F)19°C (66°F)19°C (66°F)
Wind
Speed29km/h (18mph)30km/h (18mph)30km/h (18mph)31km/h (19mph)30km/h (18mph)31km/h (19mph)30km/h (18mph)30km/h (18mph)
Gusts39km/h (24mph)41km/h (25mph)40km/h (25mph)40km/h (25mph)33km/h (21mph)35km/h (22mph)47km/h (29mph)41km/h (26mph)
Direction 62°
ENE
60°
ENE
67°
ENE
64°
ENE
64°
ENE
63°
ENE
60°
ENE
53°
NE
Wind chill25°C (76°F)24°C (76°F)24°C (76°F)25°C (76°F)22°C (71°F)23°C (73°F)24°C (76°F)24°C (76°F)
Waves
Height1.6m (5.3ft)1.6m (5.2ft)1.5m (4.9ft)1.4m (4.8ft)1.4m (4.5ft)1.4m (4.5ft)1.3m (4.4ft)1.4m (4.6ft)
Direction 103°
ESE
102°
ESE
104°
ESE
106°
ESE
106°
ESE
104°
ESE
102°
ESE
94°
E
Period7.6 sec.7.8 sec.7.9 sec.7.8 sec.7.6 sec.7.4 sec.7.4 sec.7.3 sec.
Significant height1.3m (4.3ft)1.3m (4.3ft)1.2m (3.9ft)1.3m (4.3ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)
Sea water temperature
Water temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 06:06 and will set at 19:23 on the beach(es) of Koloa. 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 18.6mph km/h (with gusts up to 28.6mph). Wave height will be up to 4.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (76°F)24°C (75°F)24°C (75°F)25°C (77°F)22°C (71°F)23°C (74°F)24°C (76°F)24°C (76°F)
Perceived temperature26°C (79°F)26°C (78°F)26°C (78°F)27°C (80°F)22°C (71°F)25°C (77°F)26°C (79°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%76%76%70%69%70%73%77%
Barometric pressure1016 hPa1015 hPa1015 hPa1016 hPa1016 hPa1014 hPa1014 hPa1015 hPa
Cloud cover18%30%71%70%6%78%80%76%
Heat index26°C (79°F)26°C (78°F)26°C (78°F)27°C (80°F)24°C (76°F)25°C (77°F)26°C (79°F)26°C (79°F)
Dew point19°C (67°F)19°C (67°F)20°C (67°F)19°C (66°F)16°C (60°F)17°C (63°F)19°C (66°F)20°C (68°F)
Wind
Speed28km/h (17mph)25km/h (16mph)25km/h (16mph)26km/h (16mph)27km/h (17mph)28km/h (18mph)30km/h (18mph)30km/h (19mph)
Gusts39km/h (24mph)35km/h (22mph)35km/h (22mph)34km/h (21mph)34km/h (21mph)33km/h (20mph)46km/h (29mph)41km/h (25mph)
Direction 57°
ENE
54°
NE
56°
NE
60°
ENE
68°
ENE
64°
ENE
55°
NE
50°
NE
Wind chill24°C (76°F)24°C (75°F)24°C (75°F)25°C (77°F)22°C (71°F)23°C (74°F)24°C (76°F)24°C (76°F)
Waves
Height1.3m (4.3ft)1.3m (4.2ft)1.2m (4.0ft)1.2m (4.0ft)1.2m (4.0ft)1.3m (4.1ft)1.3m (4.3ft)1.3m (4.3ft)
Direction 173°
S
174°
S
171°
S
172°
S
173°
S
170°
S
171°
S
172°
S
Period6.8 sec.6.7 sec.16.7 sec.16.6 sec.16.4 sec.15.8 sec.15.5 sec.15.5 sec.
Significant height1.1m (3.6ft)1.1m (3.6ft)1.0m (3.3ft)1.1m (3.6ft)1.1m (3.6ft)1.2m (3.9ft)1.3m (4.3ft)1.2m (3.9ft)
Sea water temperature
Water temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 06:06 and will set at 19:23 on the beach(es) of Koloa. The outside temperature will be a high of 77°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 18.6mph km/h (with gusts up to 26.1mph). Wave height will be up to 4.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (76°F)24°C (75°F)24°C (75°F)25°C (76°F)25°C (76°F)23°C (74°F)25°C (77°F)25°C (77°F)
Perceived temperature26°C (79°F)26°C (78°F)26°C (79°F)27°C (80°F)26°C (79°F)25°C (77°F)27°C (81°F)27°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%79%78%77%74%75%76%79%
Barometric pressure1015 hPa1014 hPa1014 hPa1015 hPa1014 hPa1013 hPa1013 hPa1015 hPa
Cloud cover86%87%87%76%86%82%75%71%
Heat index26°C (79°F)26°C (78°F)26°C (79°F)27°C (80°F)26°C (79°F)25°C (77°F)27°C (81°F)27°C (80°F)
Dew point20°C (69°F)20°C (68°F)20°C (68°F)20°C (69°F)20°C (67°F)19°C (65°F)21°C (69°F)21°C (70°F)
Wind
Speed28km/h (17mph)28km/h (17mph)28km/h (17mph)29km/h (18mph)28km/h (17mph)28km/h (17mph)28km/h (17mph)30km/h (19mph)
Gusts38km/h (24mph)38km/h (24mph)39km/h (24mph)38km/h (24mph)42km/h (26mph)33km/h (21mph)38km/h (24mph)42km/h (26mph)
Direction 53°
NE
46°
NE
52°
NE
59°
ENE
67°
ENE
71°
ENE
67°
ENE
67°
ENE
Wind chill24°C (76°F)24°C (75°F)24°C (75°F)25°C (76°F)25°C (76°F)23°C (74°F)25°C (77°F)25°C (77°F)
Waves
Height1.2m (4.1ft)1.2m (4.1ft)1.3m (4.2ft)1.3m (4.3ft)1.3m (4.3ft)1.3m (4.4ft)1.3m (4.4ft)1.3m (4.4ft)
Direction 172°
S
172°
S
172°
S
172°
S
172°
S
171°
S
170°
S
170°
S
Period15.4 sec.15.0 sec.14.6 sec.14.5 sec.14.4 sec.14.4 sec.14.1 sec.13.7 sec.
Significant height1.2m (3.9ft)1.1m (3.6ft)1.5m (4.9ft)1.3m (4.3ft)1.3m (4.3ft)1.4m (4.6ft)1.3m (4.3ft)1.6m (5.2ft)
Sea water temperature
Water temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 06:06 and will set at 19:22 on the beach(es) of Koloa. The outside temperature will be a high of 77°F t and a low of 74°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 20.5mph km/h (with gusts up to 28.6mph). Wave height will be up to 5.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)24°C (76°F)25°C (76°F)25°C (77°F)25°C (76°F)23°C (74°F)25°C (77°F)25°C (76°F)
Perceived temperature27°C (80°F)26°C (79°F)27°C (80°F)27°C (80°F)26°C (79°F)25°C (77°F)27°C (80°F)26°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%80%76%74%71%70%73%77%
Barometric pressure1015 hPa1014 hPa1015 hPa1016 hPa1016 hPa1015 hPa1015 hPa1016 hPa
Cloud cover65%73%76%87%29%4%36%50%
Heat index27°C (80°F)26°C (79°F)27°C (80°F)27°C (80°F)26°C (79°F)25°C (77°F)27°C (80°F)26°C (80°F)
Dew point21°C (70°F)21°C (69°F)20°C (68°F)20°C (68°F)19°C (66°F)17°C (63°F)20°C (68°F)20°C (68°F)
Wind
Speed30km/h (19mph)30km/h (18mph)30km/h (18mph)31km/h (19mph)30km/h (19mph)29km/h (18mph)30km/h (19mph)33km/h (21mph)
Gusts40km/h (25mph)40km/h (25mph)40km/h (25mph)41km/h (25mph)44km/h (27mph)30km/h (19mph)41km/h (25mph)46km/h (29mph)
Direction 74°
ENE
73°
ENE
71°
ENE
68°
ENE
70°
ENE
65°
ENE
62°
ENE
63°
ENE
Wind chill25°C (77°F)24°C (76°F)25°C (76°F)25°C (77°F)25°C (76°F)23°C (74°F)25°C (77°F)25°C (76°F)
Waves
Height1.4m (4.8ft)1.4m (4.8ft)1.4m (4.7ft)1.4m (4.7ft)1.4m (4.7ft)1.4m (4.7ft)1.5m (4.9ft)1.6m (5.1ft)
Direction 167°
SSE
166°
SSE
167°
SSE
164°
SSE
165°
SSE
169°
S
168°
SSE
167°
SSE
Period13.6 sec.13.6 sec.14.0 sec.13.9 sec.13.5 sec.13.4 sec.13.4 sec.13.3 sec.
Significant height1.6m (5.2ft)1.3m (4.3ft)1.3m (4.3ft)1.4m (4.6ft)1.3m (4.3ft)1.3m (4.3ft)1.4m (4.6ft)1.4m (4.6ft)
Sea water temperature
Water temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 06:07 and will set at 19:22 on the beach(es) of Koloa. The outside temperature will be a high of 77°F t and a low of 76°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 22.4mph km/h (with gusts up to 31.7mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (76°F)24°C (75°F)24°C (76°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (76°F)
Perceived temperature27°C (80°F)26°C (79°F)26°C (79°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity75%80%81%79%77%75%75%78%
Barometric pressure1017 hPa1016 hPa1017 hPa1017 hPa1017 hPa1016 hPa1016 hPa1017 hPa
Cloud cover88%59%63%65%51%27%34%64%
Heat index27°C (80°F)26°C (79°F)26°C (79°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)
Dew point20°C (68°F)21°C (69°F)21°C (69°F)21°C (69°F)20°C (69°F)20°C (68°F)20°C (68°F)20°C (69°F)
Wind
Speed30km/h (19mph)28km/h (17mph)28km/h (17mph)31km/h (19mph)32km/h (20mph)36km/h (22mph)36km/h (22mph)34km/h (21mph)
Gusts40km/h (25mph)38km/h (23mph)38km/h (23mph)41km/h (26mph)45km/h (28mph)51km/h (32mph)49km/h (30mph)47km/h (29mph)
Direction 63°
ENE
61°
ENE
64°
ENE
65°
ENE
65°
ENE
65°
ENE
60°
ENE
61°
ENE
Wind chill25°C (76°F)24°C (75°F)24°C (76°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (76°F)
Waves
Height1.6m (5.1ft)1.6m (5.2ft)1.6m (5.2ft)1.6m (5.2ft)1.5m (4.9ft)1.6m (5.2ft)1.6m (5.2ft)1.7m (5.6ft)
Direction 165°
SSE
167°
SSE
183°
S
193°
SSW
192°
SSW
192°
SSW
194°
SSW
193°
SSW
Period13.2 sec.13.0 sec.12.7 sec.12.5 sec.12.4 sec.11.2 sec.9.9 sec.12.0 sec.
Significant height1.3m (4.3ft)1.3m (4.3ft)1.3m (4.3ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)
Sea water temperature
Water temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)

Sea weather on Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 06:07 and will set at 19:21 on the beach(es) of Koloa. The outside temperature will be a high of 77°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 22.4mph km/h (with gusts up to 32.9mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (76°F)24°C (75°F)24°C (75°F)25°C (76°F)24°C (75°F)23°C (74°F)25°C (77°F)25°C (76°F)
Perceived temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (78°F)25°C (78°F)27°C (80°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%79%81%75%71%73%75%75%
Barometric pressure1018 hPa1017 hPa1017 hPa1018 hPa1018 hPa1017 hPa1016 hPa1017 hPa
Cloud cover62%66%90%65%17%22%48%45%
Heat index26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (78°F)25°C (78°F)27°C (80°F)26°C (79°F)
Dew point20°C (69°F)20°C (68°F)21°C (69°F)20°C (67°F)18°C (65°F)18°C (65°F)20°C (68°F)20°C (68°F)
Wind
Speed33km/h (21mph)31km/h (19mph)33km/h (21mph)35km/h (22mph)33km/h (21mph)34km/h (21mph)36km/h (22mph)35km/h (22mph)
Gusts46km/h (29mph)42km/h (26mph)47km/h (29mph)53km/h (33mph)46km/h (29mph)41km/h (25mph)49km/h (30mph)49km/h (30mph)
Direction 60°
ENE
59°
ENE
71°
ENE
69°
ENE
61°
ENE
59°
ENE
57°
ENE
59°
ENE
Wind chill24°C (76°F)24°C (75°F)24°C (75°F)25°C (76°F)24°C (75°F)23°C (74°F)25°C (77°F)25°C (76°F)
Waves
Height1.7m (5.6ft)1.6m (5.2ft)1.6m (5.2ft)1.6m (5.2ft)1.7m (5.6ft)1.7m (5.6ft)1.7m (5.6ft)1.7m (5.6ft)
Direction 192°
SSW
193°
SSW
195°
SSW
193°
SSW
192°
SSW
193°
SSW
195°
SSW
192°
SSW
Period12.5 sec.10.2 sec.9.2 sec.9.0 sec.8.0 sec.9.5 sec.9.3 sec.10.4 sec.
Significant height1.3m (4.3ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.3m (4.3ft)
Sea water temperature
Water temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

Change units