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
Saturday 13 December 202572°F to 72°Fdiscouraged
Sunday 14 December 202563°F to 70°Fnot recommended
Monday 15 December 202565°F to 67°Fdiscouraged
Tuesday 16 December 202567°F to 68°Frecommended
Wednesday 17 December 202568°F to 70°Frecommended
Thursday 18 December 202568°F to 70°Fdiscouraged
Friday 19 December 202570°F to 72°Fdiscouraged

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

Sea weather on Saturday 13 December 2025

On Saturday 13 December 2025, the sun will rise at 07:08 and will set at 17:36 on the beach(es) of Iheya-jima. The outside temperature will be a high of 72°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 19.9mph km/h (with gusts up to 27.3mph). Wave height will be up to 6.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)22°C (72°F)22°C (72°F)22°C (72°F)
Perceived temperature22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)25°C (76°F)25°C (76°F)25°C (76°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity75%76%79%78%75%73%71%74%
Barometric pressure1019 hPa1018 hPa1018 hPa1018 hPa1017 hPa1015 hPa1016 hPa1017 hPa
Cloud cover87%95%96%82%76%51%56%89%
Heat index24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)25°C (76°F)25°C (76°F)25°C (76°F)
Dew point17°C (63°F)17°C (63°F)18°C (64°F)18°C (64°F)17°C (63°F)17°C (62°F)17°C (62°F)17°C (63°F)
Wind
Speed24km/h (15mph)29km/h (18mph)24km/h (15mph)18km/h (11mph)4km/h (2mph)17km/h (10mph)29km/h (18mph)32km/h (20mph)
Gusts32km/h (20mph)38km/h (24mph)32km/h (20mph)24km/h (15mph)6km/h (4mph)24km/h (15mph)43km/h (26mph)44km/h (27mph)
Direction 71°
ENE
60°
ENE
48°
NE
49°
NE
81°
E
289°
WNW
321°
NW
333°
NNW
Wind chill22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)22°C (72°F)22°C (72°F)22°C (72°F)
Waves
Height2.0m (6.5ft)2.0m (6.5ft)1.9m (6.1ft)1.7m (5.6ft)1.6m (5.2ft)1.5m (5.1ft)1.8m (5.8ft)2.0m (6.7ft)
Direction 357°
N

N
15°
NNE
20°
NNE
32°
NNE
14°
NNE
21°
NNE
25°
NNE
Period8.4 sec.8.5 sec.8.6 sec.8.7 sec.7.6 sec.7.5 sec.8.4 sec.9.4 sec.
Significant height0.9m (3ft)0.6m (2ft)0.5m (1.6ft)1.0m (3.3ft)0.6m (2ft)1.2m (3.9ft)1.4m (4.6ft)1.6m (5.2ft)
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 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 63°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 32.9mph km/h (with gusts up to 39.8mph). Wave height will be up to 11.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature21°C (71°F)19°C (67°F)18°C (65°F)18°C (64°F)17°C (63°F)17°C (63°F)17°C (62°F)18°C (64°F)
Perceived temperature21°C (71°F)19°C (67°F)18°C (65°F)18°C (64°F)17°C (63°F)17°C (63°F)17°C (62°F)18°C (64°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity73%80%79%66%61%59%60%56%
Barometric pressure1017 hPa1018 hPa1019 hPa1021 hPa1021 hPa1020 hPa1022 hPa1023 hPa
Cloud cover100%100%100%78%77%65%95%52%
Heat index24°C (76°F)19°C (67°F)18°C (65°F)18°C (64°F)17°C (63°F)17°C (63°F)17°C (62°F)18°C (64°F)
Dew point16°C (62°F)16°C (61°F)15°C (58°F)11°C (52°F)10°C (50°F)9°C (49°F)9°C (48°F)9°C (48°F)
Wind
Speed42km/h (26mph)50km/h (31mph)53km/h (33mph)47km/h (29mph)46km/h (28mph)42km/h (26mph)39km/h (24mph)37km/h (23mph)
Gusts54km/h (33mph)60km/h (37mph)64km/h (40mph)54km/h (33mph)55km/h (34mph)52km/h (32mph)49km/h (30mph)45km/h (28mph)
Direction 337°
NNW
342°
NNW
340°
NNW
338°
NNW
342°
NNW
344°
NNW
352°
N
355°
N
Wind chill21°C (71°F)19°C (67°F)18°C (65°F)18°C (64°F)17°C (63°F)17°C (63°F)17°C (62°F)18°C (64°F)
Waves
Height2.3m (7.6ft)2.8m (9.1ft)3.1m (10.3ft)3.3m (10.8ft)3.4m (11.0ft)3.3m (10.7ft)3.1m (10.1ft)2.9m (9.5ft)
Direction 344°
NNW
345°
NNW
345°
NNW
340°
NNW
332°
NNW
329°
NNW
329°
NNW
329°
NNW
Period8.8 sec.9.0 sec.9.2 sec.8.9 sec.8.6 sec.8.6 sec.8.1 sec.9.6 sec.
Significant height1.7m (5.6ft)2.0m (6.6ft)1.9m (6.2ft)2.0m (6.6ft)1.8m (5.9ft)1.6m (5.2ft)1.4m (4.6ft)1.2m (3.9ft)
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 65°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 26.7mph). 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)18°C (64°F)18°C (64°F)18°C (65°F)18°C (64°F)18°C (64°F)18°C (65°F)19°C (66°F)
Perceived temperature18°C (64°F)18°C (64°F)18°C (64°F)18°C (65°F)18°C (64°F)18°C (64°F)18°C (65°F)19°C (66°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity55%56%55%56%56%56%55%55%
Barometric pressure1023 hPa1023 hPa1023 hPa1025 hPa1024 hPa1023 hPa1023 hPa1024 hPa
Cloud cover47%46%48%61%71%63%50%69%
Heat index18°C (64°F)18°C (64°F)18°C (64°F)18°C (65°F)18°C (64°F)18°C (64°F)18°C (65°F)19°C (66°F)
Dew point9°C (48°F)9°C (48°F)9°C (48°F)9°C (49°F)9°C (49°F)9°C (48°F)9°C (48°F)9°C (49°F)
Wind
Speed33km/h (20mph)34km/h (21mph)36km/h (22mph)33km/h (21mph)27km/h (17mph)21km/h (13mph)22km/h (14mph)20km/h (13mph)
Gusts39km/h (24mph)41km/h (26mph)43km/h (27mph)40km/h (25mph)35km/h (22mph)28km/h (17mph)30km/h (19mph)26km/h (16mph)
Direction 358°
N
359°
N

N
20°
NNE
40°
NE
45°
NE
42°
NE
58°
ENE
Wind chill18°C (64°F)18°C (64°F)18°C (64°F)18°C (65°F)18°C (64°F)18°C (64°F)18°C (65°F)19°C (66°F)
Waves
Height2.7m (8.8ft)2.5m (8.2ft)2.3m (7.6ft)2.1m (7.0ft)1.9m (6.4ft)1.8m (5.8ft)1.6m (5.4ft)1.5m (4.9ft)
Direction 330°
NNW
332°
NNW
334°
NNW
334°
NNW
335°
NNW
337°
NNW
339°
NNW
341°
NNW
Period11.0 sec.11.2 sec.11.6 sec.10.9 sec.8.3 sec.8.1 sec.8.0 sec.7.8 sec.
Significant height1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)0.8m (2.6ft)0.6m (2ft)0.7m (2.3ft)0.6m (2ft)
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 11.8mph km/h (with gusts up to 15.5mph). 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 (67°F)19°C (67°F)19°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)20°C (68°F)
Perceived temperature19°C (66°F)19°C (67°F)19°C (67°F)19°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)20°C (68°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity54%54%55%54%56%58%56%59%
Barometric pressure1023 hPa1022 hPa1022 hPa1023 hPa1022 hPa1021 hPa1021 hPa1022 hPa
Cloud cover56%0%6%5%69%88%96%80%
Heat index19°C (66°F)19°C (67°F)19°C (67°F)19°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)20°C (68°F)
Dew point9°C (49°F)10°C (49°F)10°C (50°F)10°C (50°F)11°C (51°F)11°C (52°F)11°C (51°F)11°C (53°F)
Wind
Speed18km/h (11mph)17km/h (11mph)18km/h (11mph)15km/h (10mph)15km/h (10mph)15km/h (9mph)16km/h (10mph)19km/h (12mph)
Gusts22km/h (14mph)22km/h (14mph)23km/h (14mph)20km/h (13mph)21km/h (13mph)22km/h (14mph)22km/h (14mph)25km/h (15mph)
Direction 82°
E
83°
E
77°
ENE
80°
E
85°
E
76°
ENE
65°
ENE
63°
ENE
Wind chill19°C (66°F)19°C (67°F)19°C (67°F)19°C (67°F)20°C (67°F)19°C (67°F)20°C (68°F)20°C (68°F)
Waves
Height1.4m (4.5ft)1.3m (4.2ft)1.2m (3.9ft)1.1m (3.6ft)1.0m (3.4ft)1.0m (3.2ft)0.9m (3.0ft)0.8m (2.8ft)
Direction 342°
NNW
344°
NNW
346°
NNW
347°
NNW
347°
NNW
86°
E
87°
E
87°
E
Period7.6 sec.7.4 sec.7.3 sec.7.0 sec.6.9 sec.6.8 sec.6.7 sec.6.6 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)1.4m (4.6ft)1.3m (4.3ft)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 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 70°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 10.6mph km/h (with gusts up to 14.3mph). 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)21°C (69°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (69°F)
Perceived temperature20°C (68°F)21°C (69°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (69°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity60%52%53%56%55%55%54%55%
Barometric pressure1021 hPa1021 hPa1020 hPa1021 hPa1020 hPa1019 hPa1020 hPa1021 hPa
Cloud cover76%80%70%28%14%21%28%27%
Heat index20°C (68°F)21°C (69°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (69°F)
Dew point12°C (53°F)10°C (51°F)11°C (51°F)11°C (52°F)11°C (51°F)11°C (51°F)10°C (51°F)11°C (52°F)
Wind
Speed17km/h (11mph)11km/h (7mph)15km/h (9mph)15km/h (9mph)12km/h (8mph)8km/h (5mph)5km/h (3mph)4km/h (2mph)
Gusts23km/h (14mph)15km/h (9mph)19km/h (12mph)20km/h (12mph)18km/h (11mph)13km/h (8mph)8km/h (5mph)5km/h (3mph)
Direction 71°
ENE
76°
ENE
74°
ENE
86°
E
98°
E
94°
E
47°
NE
37°
NE
Wind chill20°C (68°F)21°C (69°F)21°C (69°F)21°C (69°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (69°F)
Waves
Height0.8m (2.6ft)0.7m (2.4ft)0.7m (2.3ft)0.7m (2.2ft)0.6m (2.1ft)0.6m (2.0ft)0.6m (1.9ft)0.8m (2.6ft)
Direction 88°
E
88°
E
89°
E
90°
E
91°
E
92°
E
93°
E
93°
E
Period9.5 sec.9.6 sec.9.6 sec.9.5 sec.9.3 sec.9.2 sec.9.1 sec.9.1 sec.
Significant height0.6m (2ft)0.7m (2.3ft)0.6m (2ft)0.7m (2.3ft)0.6m (2ft)0.5m (1.6ft)0.6m (2ft)1.1m (3.6ft)
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 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 19.3mph km/h (with gusts up to 24.2mph). Wave height will be up to 6.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature20°C (69°F)21°C (69°F)20°C (69°F)20°C (68°F)20°C (67°F)20°C (68°F)20°C (69°F)21°C (70°F)
Perceived temperature20°C (69°F)21°C (69°F)20°C (69°F)20°C (68°F)20°C (67°F)20°C (68°F)20°C (69°F)21°C (70°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity67%68%68%69%66%63%64%66%
Barometric pressure1021 hPa1021 hPa1021 hPa1022 hPa1021 hPa1020 hPa1021 hPa1021 hPa
Cloud cover90%100%100%97%93%73%94%76%
Heat index20°C (69°F)21°C (69°F)20°C (69°F)20°C (68°F)20°C (67°F)20°C (68°F)20°C (69°F)21°C (70°F)
Dew point14°C (57°F)15°C (58°F)14°C (58°F)14°C (57°F)13°C (56°F)13°C (55°F)13°C (56°F)14°C (58°F)
Wind
Speed16km/h (10mph)23km/h (15mph)31km/h (19mph)29km/h (18mph)25km/h (16mph)23km/h (14mph)23km/h (14mph)25km/h (15mph)
Gusts21km/h (13mph)30km/h (19mph)39km/h (24mph)37km/h (23mph)33km/h (21mph)31km/h (19mph)32km/h (20mph)34km/h (21mph)
Direction 347°
NNW

N

N
14°
NNE
25°
NNE
21°
NNE
43°
NE
74°
ENE
Wind chill20°C (69°F)21°C (69°F)20°C (69°F)20°C (68°F)20°C (67°F)20°C (68°F)20°C (69°F)21°C (70°F)
Waves
Height1.1m (3.5ft)1.2m (3.9ft)1.5m (5.0ft)1.9m (6.3ft)1.8m (5.8ft)1.7m (5.6ft)1.7m (5.4ft)1.6m (5.3ft)
Direction 331°
NNW
329°
NNW
333°
NNW
322°
NW
326°
NW
331°
NNW
335°
NNW
338°
NNW
Period9.1 sec.9.0 sec.9.0 sec.9.0 sec.9.0 sec.7.3 sec.7.5 sec.7.6 sec.
Significant height1.1m (3.6ft)1.1m (3.6ft)1.3m (4.3ft)1.2m (3.9ft)1.1m (3.6ft)0.9m (3ft)0.9m (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 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 21.8mph km/h (with gusts up to 29.2mph). Wave height will be up to 6.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature21°C (70°F)21°C (70°F)21°C (70°F)21°C (71°F)22°C (71°F)21°C (70°F)21°C (71°F)22°C (72°F)
Perceived temperature21°C (70°F)21°C (70°F)21°C (70°F)21°C (71°F)22°C (71°F)21°C (70°F)21°C (71°F)25°C (76°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity66%70%68%76%69%67%64%70%
Barometric pressure1020 hPa1020 hPa1020 hPa1021 hPa1020 hPa1019 hPa1020 hPa1020 hPa
Cloud cover93%51%70%97%96%99%58%65%
Heat index24°C (76°F)21°C (70°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)25°C (76°F)
Dew point15°C (58°F)15°C (60°F)15°C (59°F)17°C (62°F)16°C (60°F)15°C (59°F)14°C (58°F)17°C (62°F)
Wind
Speed23km/h (15mph)26km/h (16mph)27km/h (17mph)33km/h (20mph)35km/h (21mph)31km/h (19mph)30km/h (19mph)31km/h (19mph)
Gusts31km/h (19mph)33km/h (21mph)35km/h (22mph)43km/h (26mph)47km/h (29mph)42km/h (26mph)43km/h (27mph)43km/h (27mph)
Direction 86°
E
89°
E
81°
E
74°
ENE
84°
E
83°
E
81°
E
92°
E
Wind chill21°C (70°F)21°C (70°F)21°C (70°F)21°C (71°F)22°C (71°F)21°C (70°F)21°C (71°F)22°C (72°F)
Waves
Height1.6m (5.1ft)1.4m (4.8ft)1.4m (4.5ft)1.3m (4.3ft)1.3m (4.2ft)1.4m (4.6ft)1.8m (5.8ft)1.9m (6.3ft)
Direction 341°
NNW
346°
NNW
351°
N
351°
N
356°
N
20°
NNE
47°
NE
63°
ENE
Period7.7 sec.7.8 sec.7.8 sec.7.6 sec.7.4 sec.7.4 sec.7.3 sec.7.2 sec.
Significant height0.7m (2.3ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)1.2m (3.9ft)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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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