Sea weather in Iheya-jima in Japan All the beach weather in Iheya-jima

All the essential weather information for enjoying the beach in Iheya-jima in Japan, 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 Iheya-jima over the next 7 days?

Discover the best moment to go to the beach in Iheya-jima in Japan this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Iheya-jima. 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 202561°F to 70°Fnot recommended
Monday 15 December 202563°F to 67°Fdiscouraged
Tuesday 16 December 202567°F to 68°Frecommended
Wednesday 17 December 202567°F to 68°Frecommended
Thursday 18 December 202567°F to 70°Fdiscouraged
Friday 19 December 202568°F to 72°Fdiscouraged
Saturday 20 December 202572°F to 74°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Iheya-jima

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 07:09 and will set at 17:37 on the beach(es) of Iheya-jima. The outside temperature will be a high of 70°F t and a low of 61°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 31.7mph km/h (with gusts up to 39.2mph). Wave height will be up to 11.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature21°C (70°F)19°C (66°F)18°C (65°F)18°C (64°F)17°C (62°F)16°C (61°F)17°C (62°F)18°C (64°F)
Perceived temperature21°C (70°F)19°C (66°F)18°C (65°F)18°C (64°F)17°C (62°F)16°C (61°F)17°C (62°F)18°C (64°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%80%78%64%70%69%64%54%
Barometric pressure1017 hPa1018 hPa1018 hPa1021 hPa1021 hPa1020 hPa1022 hPa1023 hPa
Cloud cover100%100%100%77%100%89%100%55%
Heat index24°C (76°F)19°C (66°F)18°C (65°F)18°C (64°F)17°C (62°F)16°C (61°F)17°C (62°F)18°C (64°F)
Dew point16°C (61°F)16°C (60°F)14°C (58°F)11°C (51°F)11°C (52°F)11°C (51°F)10°C (50°F)8°C (47°F)
Wind
Speed45km/h (28mph)45km/h (28mph)51km/h (32mph)47km/h (29mph)44km/h (28mph)41km/h (25mph)45km/h (28mph)37km/h (23mph)
Gusts57km/h (35mph)54km/h (33mph)63km/h (39mph)54km/h (33mph)52km/h (32mph)49km/h (30mph)56km/h (35mph)45km/h (28mph)
Direction 340°
NNW
332°
NNW
333°
NNW
332°
NNW
337°
NNW
345°
NNW
345°
NNW
345°
NNW
Wind chill21°C (70°F)19°C (66°F)18°C (65°F)18°C (64°F)17°C (62°F)16°C (61°F)17°C (62°F)18°C (64°F)
Waves
Height2.4m (7.8ft)3.0m (9.8ft)3.2m (10.6ft)3.4m (11.0ft)3.4m (11.3ft)3.3m (11.0ft)3.2m (10.4ft)2.9m (9.5ft)
Direction 352°
N
344°
NNW
342°
NNW
335°
NNW
329°
NNW
327°
NNW
326°
NW
326°
NNW
Period8.3 sec.8.6 sec.8.7 sec.8.8 sec.8.6 sec.8.4 sec.8.1 sec.11.0 sec.
Significant height1.9m (6.2ft)1.9m (6.2ft)2.1m (6.9ft)2.0m (6.6ft)1.8m (5.9ft)1.7m (5.6ft)1.4m (4.6ft)1.4m (4.6ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 07:10 and will set at 17:37 on the beach(es) of Iheya-jima. The outside temperature will be a high of 67°F t and a low of 63°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 26.1mph). Wave height will be up to 8.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature18°C (64°F)17°C (63°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)
Perceived temperature18°C (64°F)17°C (63°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity56%57%56%56%54%54%55%55%
Barometric pressure1023 hPa1023 hPa1023 hPa1025 hPa1024 hPa1022 hPa1023 hPa1024 hPa
Cloud cover46%53%48%53%59%66%53%88%
Heat index18°C (64°F)17°C (63°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)
Dew point9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)8°C (47°F)9°C (48°F)9°C (48°F)10°C (49°F)
Wind
Speed35km/h (21mph)36km/h (22mph)34km/h (21mph)31km/h (19mph)28km/h (17mph)22km/h (13mph)22km/h (13mph)21km/h (13mph)
Gusts41km/h (26mph)42km/h (26mph)41km/h (25mph)38km/h (24mph)36km/h (23mph)29km/h (18mph)30km/h (18mph)28km/h (17mph)
Direction 353°
N

N

N
14°
NNE
36°
NE
47°
NE
41°
NE
66°
ENE
Wind chill18°C (64°F)17°C (63°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)
Waves
Height2.7m (8.7ft)2.5m (8.1ft)2.3m (7.6ft)2.1m (7.1ft)2.0m (6.5ft)1.8m (6.0ft)1.6m (5.4ft)1.5m (5.0ft)
Direction 328°
NNW
331°
NNW
334°
NNW
335°
NNW
336°
NNW
338°
NNW
341°
NNW
342°
NNW
Period11.1 sec.11.2 sec.11.6 sec.10.9 sec.10.7 sec.8.1 sec.7.9 sec.7.7 sec.
Significant height1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)1.1m (3.6ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 07:10 and will set at 17:37 on the beach(es) of Iheya-jima. The outside temperature will be a high of 68°F t and a low of 67°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 14.3mph). Wave height will be up to 4.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature19°C (66°F)19°C (66°F)19°C (67°F)19°C (67°F)19°C (66°F)19°C (66°F)19°C (67°F)20°C (67°F)
Perceived temperature19°C (66°F)19°C (66°F)19°C (67°F)19°C (67°F)19°C (66°F)19°C (66°F)19°C (67°F)20°C (67°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity54%51%52%55%54%56%57%56%
Barometric pressure1023 hPa1022 hPa1022 hPa1023 hPa1022 hPa1021 hPa1022 hPa1023 hPa
Cloud cover89%0%34%63%17%74%65%93%
Heat index19°C (66°F)19°C (66°F)19°C (67°F)19°C (67°F)19°C (66°F)19°C (66°F)19°C (67°F)20°C (67°F)
Dew point9°C (49°F)9°C (47°F)9°C (49°F)10°C (50°F)9°C (49°F)10°C (50°F)11°C (51°F)11°C (51°F)
Wind
Speed15km/h (10mph)12km/h (7mph)12km/h (7mph)15km/h (10mph)11km/h (7mph)13km/h (8mph)17km/h (10mph)15km/h (10mph)
Gusts20km/h (12mph)15km/h (9mph)15km/h (9mph)20km/h (13mph)16km/h (10mph)19km/h (12mph)23km/h (15mph)21km/h (13mph)
Direction 82°
E
91°
E
99°
E
112°
ESE
103°
ESE
80°
E
65°
ENE
71°
ENE
Wind chill19°C (66°F)19°C (66°F)19°C (67°F)19°C (67°F)19°C (66°F)19°C (66°F)19°C (67°F)20°C (67°F)
Waves
Height1.4m (4.6ft)1.3m (4.3ft)1.2m (4.0ft)1.1m (3.7ft)1.0m (3.4ft)1.0m (3.2ft)0.9m (3.0ft)0.8m (2.8ft)
Direction 344°
NNW
345°
NNW
348°
NNW
350°
N
353°
N
86°
E
86°
E
88°
E
Period7.5 sec.7.5 sec.7.3 sec.7.2 sec.7.0 sec.6.9 sec.6.7 sec.6.6 sec.
Significant height0.5m (1.6ft)0.4m (1.3ft)0.3m (1ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 07:11 and will set at 17:38 on the beach(es) of Iheya-jima. The outside temperature will be a high of 68°F t and a low of 67°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 9.3mph km/h (with gusts up to 13.7mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature20°C (68°F)20°C (67°F)20°C (67°F)20°C (68°F)20°C (67°F)20°C (67°F)20°C (67°F)20°C (69°F)
Perceived temperature20°C (68°F)20°C (67°F)20°C (67°F)20°C (68°F)20°C (67°F)20°C (67°F)20°C (67°F)20°C (69°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity53%65%65%63%61%57%57%58%
Barometric pressure1022 hPa1021 hPa1021 hPa1023 hPa1021 hPa1020 hPa1021 hPa1022 hPa
Cloud cover88%81%52%33%10%15%17%66%
Heat index20°C (68°F)20°C (67°F)20°C (67°F)20°C (68°F)20°C (67°F)20°C (67°F)20°C (67°F)20°C (69°F)
Dew point10°C (50°F)13°C (55°F)13°C (55°F)13°C (55°F)12°C (53°F)11°C (52°F)11°C (52°F)12°C (53°F)
Wind
Speed8km/h (5mph)9km/h (6mph)12km/h (7mph)15km/h (9mph)15km/h (9mph)7km/h (4mph)6km/h (4mph)5km/h (3mph)
Gusts11km/h (7mph)12km/h (8mph)15km/h (9mph)19km/h (12mph)22km/h (14mph)11km/h (7mph)9km/h (6mph)7km/h (4mph)
Direction 94°
E
91°
E
70°
ENE
81°
E
118°
ESE
110°
ESE
48°
NE
23°
NNE
Wind chill20°C (68°F)20°C (67°F)20°C (67°F)20°C (68°F)20°C (67°F)20°C (67°F)20°C (67°F)20°C (69°F)
Waves
Height0.8m (2.6ft)0.7m (2.5ft)0.7m (2.3ft)0.7m (2.2ft)0.6m (2.1ft)0.6m (1.9ft)0.6m (1.8ft)0.5m (1.8ft)
Direction 88°
E
89°
E
89°
E
90°
E
91°
E
92°
E
93°
E
93°
E
Period9.5 sec.9.5 sec.9.4 sec.9.3 sec.9.2 sec.9.0 sec.9.0 sec.9.0 sec.
Significant height0.6m (2ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)0.5m (1.6ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 07:12 and will set at 17:38 on the beach(es) of Iheya-jima. The outside temperature will be a high of 70°F t and a low of 67°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 17.4mph km/h (with gusts up to 22.4mph). Wave height will be up to 6.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature20°C (68°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)
Perceived temperature20°C (68°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%65%66%68%65%64%63%62%
Barometric pressure1022 hPa1021 hPa1022 hPa1023 hPa1023 hPa1021 hPa1021 hPa1022 hPa
Cloud cover100%89%96%69%96%90%58%71%
Heat index20°C (68°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)
Dew point15°C (59°F)14°C (57°F)14°C (57°F)14°C (57°F)13°C (55°F)13°C (55°F)12°C (54°F)13°C (55°F)
Wind
Speed18km/h (11mph)26km/h (16mph)24km/h (15mph)28km/h (17mph)24km/h (15mph)21km/h (13mph)22km/h (13mph)22km/h (13mph)
Gusts24km/h (15mph)34km/h (21mph)32km/h (20mph)36km/h (22mph)33km/h (20mph)29km/h (18mph)30km/h (19mph)28km/h (18mph)
Direction
N
13°
NNE
14°
NNE
22°
NNE
16°
NNE
23°
NNE
32°
NNE
56°
NE
Wind chill20°C (68°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)
Waves
Height0.6m (1.9ft)0.8m (2.7ft)1.4m (4.7ft)1.9m (6.1ft)1.9m (6.1ft)1.8m (6.0ft)1.7m (5.6ft)1.6m (5.2ft)
Direction 94°
E
94°
E
336°
NNW
336°
NNW
335°
NNW
333°
NNW
333°
NNW
336°
NNW
Period9.0 sec.9.0 sec.9.0 sec.9.0 sec.9.0 sec.7.6 sec.7.7 sec.7.7 sec.
Significant height0.7m (2.3ft)0.8m (2.6ft)1.3m (4.3ft)1.2m (3.9ft)1.2m (3.9ft)0.8m (2.6ft)0.7m (2.3ft)0.8m (2.6ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 07:12 and will set at 17:39 on the beach(es) of Iheya-jima. The outside temperature will be a high of 72°F t and a low of 68°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 23mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature20°C (68°F)21°C (69°F)21°C (69°F)21°C (70°F)20°C (69°F)20°C (69°F)21°C (70°F)22°C (71°F)
Perceived temperature20°C (68°F)21°C (69°F)21°C (69°F)21°C (70°F)20°C (69°F)20°C (69°F)21°C (70°F)22°C (71°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity63%60%61%61%63%65%65%67%
Barometric pressure1021 hPa1021 hPa1020 hPa1021 hPa1020 hPa1019 hPa1019 hPa1020 hPa
Cloud cover52%51%48%56%15%15%38%37%
Heat index20°C (68°F)21°C (69°F)21°C (69°F)21°C (70°F)20°C (69°F)20°C (69°F)21°C (70°F)25°C (76°F)
Dew point13°C (55°F)13°C (55°F)13°C (55°F)13°C (56°F)13°C (55°F)14°C (56°F)14°C (58°F)15°C (60°F)
Wind
Speed21km/h (13mph)16km/h (10mph)19km/h (12mph)20km/h (13mph)21km/h (13mph)24km/h (15mph)25km/h (15mph)24km/h (15mph)
Gusts27km/h (17mph)21km/h (13mph)25km/h (16mph)27km/h (16mph)31km/h (19mph)37km/h (23mph)36km/h (23mph)32km/h (20mph)
Direction 75°
ENE
84°
E
82°
E
79°
E
82°
E
86°
E
85°
E
98°
E
Wind chill20°C (68°F)21°C (69°F)21°C (69°F)21°C (70°F)20°C (69°F)20°C (69°F)21°C (70°F)22°C (71°F)
Waves
Height1.5m (4.9ft)1.4m (4.6ft)1.3m (4.3ft)1.2m (4.0ft)1.1m (3.7ft)1.0m (3.4ft)1.0m (3.1ft)0.9m (2.9ft)
Direction 340°
NNW
344°
NNW
346°
NNW
348°
NNW
352°
N
357°
N

N
14°
NNE
Period7.6 sec.7.5 sec.7.5 sec.7.4 sec.7.3 sec.7.3 sec.7.2 sec.7.1 sec.
Significant height0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)1.1m (3.6ft)0.9m (3ft)0.8m (2.6ft)0.7m (2.3ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 07:13 and will set at 17:39 on the beach(es) of Iheya-jima. The outside temperature will be a high of 74°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 16.8mph km/h (with gusts up to 24.9mph). Wave height will be up to 3ft 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)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)
Perceived temperature25°C (76°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity68%66%66%67%69%70%70%74%
Barometric pressure1019 hPa1018 hPa1018 hPa1019 hPa1019 hPa1017 hPa1018 hPa1020 hPa
Cloud cover67%36%49%43%51%58%46%79%
Heat index25°C (76°F)25°C (76°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)
Dew point16°C (60°F)15°C (60°F)15°C (60°F)16°C (61°F)16°C (62°F)17°C (62°F)17°C (62°F)18°C (64°F)
Wind
Speed25km/h (15mph)22km/h (13mph)22km/h (14mph)25km/h (16mph)26km/h (16mph)23km/h (14mph)27km/h (17mph)26km/h (16mph)
Gusts33km/h (21mph)29km/h (18mph)29km/h (18mph)34km/h (21mph)37km/h (23mph)34km/h (21mph)40km/h (25mph)36km/h (22mph)
Direction 106°
ESE
103°
ESE
85°
E
87°
E
106°
ESE
97°
E
98°
E
118°
ESE
Wind chill22°C (72°F)22°C (72°F)22°C (72°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)
Waves
Height0.8m (2.8ft)0.8m (2.7ft)0.8m (2.7ft)0.9m (2.8ft)0.9m (3.0ft)0.9m (3.1ft)0.9m (3.1ft)0.9m (3.1ft)
Direction 32°
NNE
10°
N
86°
E
81°
E
79°
ENE
81°
E
85°
E
88°
E
Period6.7 sec.6.7 sec.8.8 sec.9.0 sec.8.0 sec.7.9 sec.7.7 sec.7.7 sec.
Significant height0.6m (2ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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