Sea weather in Kailua in Hawaii All the beach weather in Kailua

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

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

Date Outside temp. Our opinion
Friday 17 July 202672°F to 79°Fdiscouraged
Saturday 18 July 202670°F to 79°Fdiscouraged
Sunday 19 July 202676°F to 77°Fdiscouraged
Monday 20 July 202670°F to 77°Fdiscouraged
Tuesday 21 July 202676°F to 77°Fdiscouraged
Wednesday 22 July 202676°F to 77°Fdiscouraged
Thursday 23 July 202676°F to 77°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Kailua

Sea weather on Friday 17 July 2026

On Friday 17 July 2026, the sun will rise at 05:59 and will set at 19:17 on the beach(es) of Kailua. 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 16.2mph km/h (with gusts up to 22.4mph). Wave height will be up to 4.6ft 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 (78°F)22°C (72°F)24°C (75°F)25°C (78°F)25°C (77°F)
Perceived temperature27°C (80°F)26°C (80°F)27°C (80°F)28°C (82°F)25°C (76°F)26°C (78°F)28°C (82°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%81%81%79%77%78%81%86%
Barometric pressure1016 hPa1015 hPa1016 hPa1017 hPa1017 hPa1016 hPa1015 hPa1016 hPa
Cloud cover12%15%34%14%11%12%26%38%
Heat index27°C (80°F)26°C (80°F)27°C (80°F)28°C (82°F)25°C (76°F)26°C (78°F)28°C (82°F)27°C (81°F)
Dew point22°C (71°F)21°C (70°F)21°C (70°F)21°C (71°F)18°C (65°F)20°C (67°F)22°C (72°F)22°C (72°F)
Wind
Speed24km/h (15mph)21km/h (13mph)19km/h (12mph)19km/h (12mph)21km/h (13mph)21km/h (13mph)23km/h (15mph)26km/h (16mph)
Gusts34km/h (21mph)30km/h (19mph)27km/h (17mph)25km/h (16mph)22km/h (14mph)26km/h (16mph)32km/h (20mph)36km/h (22mph)
Direction 81°
E
87°
E
83°
E
81°
E
81°
E
77°
ENE
84°
E
82°
E
Wind chill25°C (77°F)24°C (76°F)25°C (76°F)25°C (78°F)22°C (72°F)24°C (75°F)25°C (78°F)25°C (77°F)
Waves
Height1.4m (4.6ft)1.4m (4.5ft)1.4m (4.5ft)1.3m (4.4ft)1.3m (4.3ft)1.3m (4.2ft)1.3m (4.4ft)1.4m (4.7ft)
Direction 61°
ENE
62°
ENE
51°
NE
50°
NE
49°
NE
50°
NE
52°
NE
54°
NE
Period7.5 sec.7.6 sec.7.4 sec.7.3 sec.6.9 sec.16.4 sec.7.3 sec.15.3 sec.
Significant height1.2m (3.9ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)0.5m (1.6ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 05:59 and will set at 19:16 on the beach(es) of Kailua. The outside temperature will be a high of 79°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 28mph). Wave height will be up to 5.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (76°F)25°C (78°F)22°C (71°F)23°C (74°F)24°C (76°F)25°C (76°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (80°F)28°C (82°F)22°C (71°F)25°C (77°F)26°C (79°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity85%84%82%78%78%76%78%77%
Barometric pressure1017 hPa1015 hPa1016 hPa1017 hPa1017 hPa1016 hPa1015 hPa1017 hPa
Cloud cover51%70%43%7%5%6%33%82%
Heat index27°C (81°F)27°C (81°F)27°C (80°F)28°C (82°F)24°C (76°F)25°C (77°F)26°C (79°F)26°C (79°F)
Dew point22°C (72°F)22°C (71°F)22°C (71°F)21°C (70°F)18°C (64°F)19°C (66°F)20°C (68°F)20°C (68°F)
Wind
Speed24km/h (15mph)30km/h (18mph)30km/h (19mph)27km/h (17mph)28km/h (18mph)28km/h (17mph)30km/h (19mph)28km/h (17mph)
Gusts33km/h (21mph)40km/h (25mph)41km/h (25mph)37km/h (23mph)34km/h (21mph)31km/h (19mph)45km/h (28mph)38km/h (24mph)
Direction 89°
E
88°
E
86°
E
82°
E
74°
ENE
78°
ENE
78°
ENE
76°
ENE
Wind chill25°C (77°F)25°C (77°F)25°C (76°F)25°C (78°F)22°C (71°F)23°C (74°F)24°C (76°F)25°C (76°F)
Waves
Height1.4m (4.7ft)1.5m (4.8ft)1.6m (5.3ft)1.6m (5.3ft)1.6m (5.4ft)1.8m (5.9ft)1.8m (6.0ft)1.8m (5.8ft)
Direction 55°
NE
54°
NE
66°
ENE
60°
ENE
63°
ENE
66°
ENE
66°
ENE
66°
ENE
Period15.2 sec.7.4 sec.13.5 sec.13.5 sec.13.0 sec.12.9 sec.12.8 sec.12.7 sec.
Significant height0.9m (3ft)1.1m (3.6ft)1.1m (3.6ft)0.9m (3ft)1.2m (3.9ft)1.1m (3.6ft)1.1m (3.6ft)1.1m (3.6ft)
Sea water temperature
Water temperature24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 06:00 and will set at 19:16 on the beach(es) of Kailua. 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 16.2mph km/h (with gusts up to 22.4mph). 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 (76°F)24°C (75°F)25°C (76°F)25°C (76°F)25°C (77°F)24°C (76°F)24°C (76°F)
Perceived temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%70%75%75%72%68%73%72%
Barometric pressure1018 hPa1016 hPa1016 hPa1017 hPa1017 hPa1015 hPa1015 hPa1016 hPa
Cloud cover97%32%46%65%54%31%59%48%
Heat index26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)
Dew point19°C (67°F)19°C (65°F)19°C (67°F)20°C (68°F)19°C (67°F)19°C (65°F)19°C (67°F)19°C (66°F)
Wind
Speed25km/h (15mph)23km/h (15mph)23km/h (14mph)26km/h (16mph)26km/h (16mph)22km/h (14mph)25km/h (15mph)23km/h (14mph)
Gusts33km/h (20mph)32km/h (20mph)31km/h (19mph)33km/h (21mph)36km/h (22mph)31km/h (19mph)36km/h (23mph)32km/h (20mph)
Direction 68°
ENE
73°
ENE
82°
E
68°
ENE
71°
ENE
68°
ENE
72°
ENE
65°
ENE
Wind chill25°C (76°F)24°C (76°F)24°C (75°F)25°C (76°F)25°C (76°F)25°C (77°F)24°C (76°F)24°C (76°F)
Waves
Height1.7m (5.5ft)1.5m (5.1ft)1.4m (4.8ft)1.4m (4.6ft)1.4m (4.5ft)1.4m (4.6ft)1.4m (4.5ft)1.4m (4.6ft)
Direction 68°
ENE
74°
ENE
75°
ENE
76°
ENE
76°
ENE
74°
ENE
71°
ENE
69°
ENE
Period7.9 sec.7.7 sec.7.7 sec.7.6 sec.7.5 sec.8.3 sec.8.2 sec.7.9 sec.
Significant height1.0m (3.3ft)0.9m (3ft)0.9m (3ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)1.0m (3.3ft)
Sea water temperature
Water temperature24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 06:00 and will set at 19:16 on the beach(es) of Kailua. 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 14.9mph km/h (with gusts up to 20.5mph). Wave height will be up to 4.6ft 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)21°C (71°F)25°C (76°F)25°C (77°F)24°C (76°F)
Perceived temperature26°C (79°F)26°C (78°F)26°C (78°F)26°C (79°F)21°C (71°F)26°C (79°F)27°C (80°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%75%75%73%69%72%71%78%
Barometric pressure1016 hPa1014 hPa1015 hPa1016 hPa1015 hPa1014 hPa1014 hPa1015 hPa
Cloud cover53%46%52%35%4%28%36%49%
Heat index26°C (79°F)26°C (78°F)26°C (78°F)26°C (79°F)24°C (76°F)26°C (79°F)27°C (80°F)26°C (79°F)
Dew point19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)15°C (60°F)19°C (67°F)19°C (67°F)20°C (69°F)
Wind
Speed24km/h (15mph)20km/h (12mph)22km/h (14mph)21km/h (13mph)17km/h (11mph)18km/h (11mph)18km/h (11mph)22km/h (14mph)
Gusts33km/h (21mph)27km/h (17mph)31km/h (19mph)27km/h (17mph)24km/h (15mph)24km/h (15mph)25km/h (16mph)31km/h (19mph)
Direction 73°
ENE
77°
ENE
70°
ENE
69°
ENE
62°
ENE
51°
NE
71°
ENE
73°
ENE
Wind chill24°C (76°F)24°C (75°F)24°C (75°F)25°C (76°F)21°C (71°F)25°C (76°F)25°C (77°F)24°C (76°F)
Waves
Height1.4m (4.5ft)1.3m (4.4ft)1.3m (4.4ft)1.3m (4.3ft)1.3m (4.2ft)1.2m (4.0ft)1.2m (3.9ft)1.2m (3.8ft)
Direction 68°
ENE
68°
ENE
63°
ENE
62°
ENE
60°
ENE
59°
ENE
59°
ENE
60°
ENE
Period7.8 sec.7.7 sec.7.8 sec.16.5 sec.16.3 sec.7.7 sec.7.4 sec.7.4 sec.
Significant height0.9m (3ft)1.0m (3.3ft)0.9m (3ft)0.7m (2.3ft)0.7m (2.3ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 06:00 and will set at 19:15 on the beach(es) of Kailua. 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 15.5mph km/h (with gusts up to 22.4mph). Wave height will be up to 4.6ft 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)24°C (76°F)24°C (76°F)25°C (77°F)24°C (76°F)25°C (76°F)
Perceived temperature26°C (79°F)26°C (79°F)26°C (78°F)26°C (79°F)26°C (79°F)27°C (80°F)26°C (79°F)26°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%78%77%75%76%76%77%77%
Barometric pressure1015 hPa1013 hPa1014 hPa1015 hPa1014 hPa1013 hPa1013 hPa1015 hPa
Cloud cover33%44%37%33%34%55%79%71%
Heat index26°C (79°F)26°C (79°F)26°C (78°F)26°C (79°F)26°C (79°F)27°C (80°F)26°C (79°F)26°C (80°F)
Dew point20°C (68°F)20°C (68°F)20°C (67°F)20°C (67°F)20°C (68°F)20°C (69°F)20°C (68°F)20°C (69°F)
Wind
Speed22km/h (14mph)22km/h (14mph)19km/h (12mph)18km/h (11mph)19km/h (12mph)23km/h (15mph)25km/h (16mph)25km/h (15mph)
Gusts30km/h (19mph)30km/h (19mph)27km/h (17mph)23km/h (14mph)26km/h (16mph)31km/h (19mph)36km/h (23mph)35km/h (22mph)
Direction 74°
ENE
72°
ENE
63°
ENE
61°
ENE
78°
ENE
81°
E
77°
ENE
79°
ENE
Wind chill24°C (76°F)24°C (75°F)24°C (75°F)24°C (76°F)24°C (76°F)25°C (77°F)24°C (76°F)25°C (76°F)
Waves
Height1.2m (3.8ft)1.2m (3.9ft)1.2m (4.1ft)1.2m (4.1ft)1.2m (4.1ft)1.3m (4.2ft)1.3m (4.4ft)1.4m (4.5ft)
Direction 60°
ENE
58°
ENE
175°
S
174°
S
173°
S
170°
S
168°
SSE
165°
SSE
Period7.2 sec.14.9 sec.14.6 sec.14.5 sec.14.4 sec.14.3 sec.14.0 sec.13.8 sec.
Significant height0.5m (1.6ft)0.8m (2.6ft)0.9m (3ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)1.0m (3.3ft)1.0m (3.3ft)
Sea water temperature
Water temperature24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 06:01 and will set at 19:15 on the beach(es) of Kailua. 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 16.2mph km/h (with gusts up to 22.4mph). Wave height will be up to 4.6ft 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)25°C (76°F)25°C (77°F)25°C (77°F)25°C (76°F)
Perceived temperature26°C (80°F)26°C (79°F)26°C (79°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%78%79%77%75%74%74%74%
Barometric pressure1015 hPa1014 hPa1014 hPa1015 hPa1015 hPa1014 hPa1015 hPa1016 hPa
Cloud cover57%56%65%63%54%56%61%61%
Heat index26°C (80°F)26°C (79°F)26°C (79°F)26°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (79°F)
Dew point20°C (69°F)20°C (69°F)20°C (69°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (67°F)
Wind
Speed23km/h (14mph)23km/h (14mph)23km/h (14mph)22km/h (14mph)22km/h (13mph)24km/h (15mph)26km/h (16mph)26km/h (16mph)
Gusts32km/h (20mph)32km/h (20mph)31km/h (19mph)30km/h (18mph)30km/h (19mph)32km/h (20mph)35km/h (22mph)36km/h (22mph)
Direction 87°
E
90°
E
86°
E
85°
E
88°
E
87°
E
83°
E
80°
E
Wind chill25°C (76°F)24°C (76°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
Height1.4m (4.4ft)1.3m (4.3ft)1.3m (4.3ft)1.2m (3.9ft)1.2m (3.9ft)1.3m (4.3ft)1.4m (4.6ft)1.4m (4.6ft)
Direction 163°
SSE
161°
SSE
159°
SSE
156°
SSE
152°
SSE
148°
SSE
137°
SE
134°
SE
Period13.7 sec.13.7 sec.13.7 sec.11.3 sec.6.7 sec.8.7 sec.12.7 sec.12.8 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)1.0m (3.3ft)1.0m (3.3ft)
Sea water temperature
Water temperature24°C (74°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 06:01 and will set at 19:15 on the beach(es) of Kailua. 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 18.6mph km/h (with gusts up to 26.1mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (76°F)24°C (76°F)25°C (76°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (76°F)25°C (76°F)
Perceived temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (80°F)26°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%76%74%73%72%72%75%78%
Barometric pressure1017 hPa1016 hPa1016 hPa1017 hPa1017 hPa1016 hPa1016 hPa1017 hPa
Cloud cover56%58%53%49%41%31%36%55%
Heat index26°C (79°F)26°C (79°F)26°C (79°F)26°C (80°F)26°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)
Dew point19°C (67°F)20°C (67°F)20°C (67°F)20°C (67°F)19°C (67°F)19°C (67°F)20°C (68°F)20°C (69°F)
Wind
Speed23km/h (14mph)22km/h (14mph)26km/h (16mph)28km/h (17mph)27km/h (17mph)29km/h (18mph)29km/h (18mph)30km/h (19mph)
Gusts33km/h (21mph)31km/h (19mph)36km/h (22mph)38km/h (24mph)37km/h (23mph)40km/h (25mph)40km/h (25mph)42km/h (26mph)
Direction 84°
E
85°
E
86°
E
83°
E
79°
E
80°
E
79°
ENE
80°
E
Wind chill24°C (76°F)24°C (76°F)25°C (76°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (76°F)25°C (76°F)
Waves
Height1.3m (4.3ft)1.3m (4.3ft)1.3m (4.3ft)1.3m (4.3ft)1.4m (4.6ft)1.5m (4.9ft)1.5m (4.9ft)1.5m (4.9ft)
Direction 126°
SE
127°
SE
128°
SE
108°
ESE
79°
E
66°
ENE
78°
ENE
93°
E
Period11.8 sec.11.9 sec.11.9 sec.11.8 sec.11.7 sec.11.6 sec.11.4 sec.11.2 sec.
Significant height0.9m (3ft)0.9m (3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.1m (3.6ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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