Sea weather in Niihama in Japan All the beach weather in Niihama

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

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

Date Outside temp. Our opinion
Sunday 19 July 202674°F to 85°Frecommended
Monday 20 July 202676°F to 85°Frecommended
Tuesday 21 July 202676°F to 81°Frecommended
Wednesday 22 July 202676°F to 81°Frecommended
Thursday 23 July 202674°F to 81°Frecommended
Friday 24 July 202676°F to 81°Frecommended
Saturday 25 July 202676°F to 83°Frecommended

Sea Weather: Your daily and hourly sea weather in Niihama

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 05:09 and will set at 19:17 on the beach(es) of Niihama. The outside temperature will be a high of 85°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 6.2mph km/h (with gusts up to 9.9mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (78°F)25°C (77°F)25°C (77°F)27°C (80°F)24°C (75°F)28°C (82°F)28°C (83°F)26°C (80°F)
Perceived temperature29°C (83°F)28°C (82°F)28°C (82°F)30°C (87°F)26°C (78°F)32°C (89°F)33°C (91°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity92%93%92%83%81%77%79%87%
Barometric pressure1005 hPa1005 hPa1006 hPa1006 hPa1006 hPa1006 hPa1006 hPa1007 hPa
Cloud cover14%21%16%5%9%26%71%48%
Heat index29°C (83°F)28°C (82°F)28°C (82°F)30°C (87°F)26°C (78°F)32°C (89°F)33°C (91°F)30°C (86°F)
Dew point24°C (75°F)24°C (74°F)24°C (74°F)24°C (75°F)20°C (69°F)24°C (75°F)24°C (76°F)24°C (75°F)
Wind
Speed5km/h (3mph)3km/h (2mph)1km/h (1mph)6km/h (4mph)7km/h (4mph)4km/h (2mph)10km/h (6mph)7km/h (4mph)
Gusts9km/h (6mph)6km/h (4mph)2km/h (1mph)9km/h (6mph)14km/h (9mph)7km/h (4mph)16km/h (10mph)13km/h (8mph)
Direction 282°
WNW
249°
WSW
128°
SE
357°
N
349°
NNW
281°
W
226°
SW
269°
W
Wind chill25°C (78°F)25°C (77°F)25°C (77°F)27°C (80°F)24°C (75°F)28°C (82°F)28°C (83°F)26°C (80°F)
Waves
Height0.1m (0.4ft)0.3m (1.1ft)0.3m (1.1ft)0.1m (0.3ft)0.3m (0.9ft)0.2m (0.6ft)0.1m (0.3ft)0.3m (0.9ft)
Direction 216°
SW
213°
SSW
211°
SSW
209°
SSW
208°
SSW
208°
SSW
9999°
W
9999°
W
Period4.6 sec.4.5 sec.4.3 sec.4.1 sec.4.1 sec.4.1 sec.4.1 sec.4.1 sec.
Significant height0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.2m (0.7ft)0.3m (1ft)0.1m (0.3ft)0.2m (0.7ft)0.2m (0.7ft)
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 Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 05:10 and will set at 19:17 on the beach(es) of Niihama. The outside temperature will be a high of 85°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 7.5mph km/h (with gusts up to 13.7mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)25°C (78°F)25°C (78°F)27°C (81°F)24°C (75°F)28°C (82°F)28°C (82°F)26°C (79°F)
Perceived temperature29°C (84°F)28°C (83°F)28°C (83°F)31°C (87°F)26°C (78°F)31°C (88°F)32°C (90°F)29°C (85°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity90%89%89%83%80%77%80%87%
Barometric pressure1007 hPa1007 hPa1008 hPa1009 hPa1008 hPa1007 hPa1007 hPa1009 hPa
Cloud cover41%25%9%20%15%18%44%27%
Heat index29°C (84°F)28°C (83°F)28°C (83°F)31°C (87°F)26°C (78°F)31°C (88°F)32°C (90°F)29°C (85°F)
Dew point24°C (75°F)24°C (74°F)23°C (74°F)24°C (75°F)20°C (68°F)23°C (74°F)24°C (76°F)24°C (75°F)
Wind
Speed2km/h (1mph)3km/h (2mph)1km/h (1mph)4km/h (2mph)6km/h (4mph)8km/h (5mph)12km/h (8mph)11km/h (7mph)
Gusts4km/h (2mph)5km/h (3mph)2km/h (1mph)5km/h (3mph)13km/h (8mph)14km/h (9mph)21km/h (13mph)22km/h (14mph)
Direction 244°
WSW
233°
SW
187°
S
318°
NW
322°
NW
236°
SW
223°
SW
216°
SW
Wind chill26°C (78°F)25°C (78°F)25°C (78°F)27°C (81°F)24°C (75°F)28°C (82°F)28°C (82°F)26°C (79°F)
Waves
Height0.1m (0.3ft)0.5m (1.5ft)0.1m (0.4ft)0.1m (0.3ft)0.5m (1.6ft)0.1m (0.3ft)0.2m (0.6ft)0.2m (0.5ft)
Direction 215°
SW
214°
SW
211°
SSW
209°
SSW
206°
SSW
9999°
W
228°
SW
229°
SW
Period4.1 sec.4.1 sec.4.0 sec.4.0 sec.4.0 sec.4.0 sec.4.0 sec.4.0 sec.
Significant height0.3m (1ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.3m (1ft)0.5m (1.6ft)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 Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 05:11 and will set at 19:16 on the beach(es) of Niihama. The outside temperature will be a high of 81°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 8.7mph km/h (with gusts up to 18mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (78°F)25°C (77°F)25°C (77°F)27°C (80°F)24°C (74°F)26°C (79°F)27°C (80°F)26°C (78°F)
Perceived temperature28°C (83°F)28°C (82°F)28°C (82°F)30°C (86°F)26°C (78°F)28°C (83°F)30°C (86°F)29°C (84°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity91%92%91%86%84%79%82%89%
Barometric pressure1009 hPa1009 hPa1009 hPa1010 hPa1009 hPa1008 hPa1008 hPa1010 hPa
Cloud cover34%23%17%15%13%13%13%14%
Heat index28°C (83°F)28°C (82°F)28°C (82°F)30°C (86°F)26°C (78°F)28°C (83°F)30°C (86°F)29°C (84°F)
Dew point24°C (75°F)24°C (75°F)24°C (74°F)24°C (75°F)21°C (69°F)22°C (72°F)24°C (74°F)24°C (75°F)
Wind
Speed9km/h (6mph)7km/h (4mph)4km/h (3mph)7km/h (4mph)9km/h (6mph)14km/h (9mph)13km/h (8mph)13km/h (8mph)
Gusts19km/h (11mph)14km/h (8mph)8km/h (5mph)11km/h (7mph)19km/h (12mph)29km/h (18mph)28km/h (17mph)26km/h (16mph)
Direction 215°
SW
203°
SSW
205°
SSW
256°
WSW
241°
WSW
216°
SW
220°
SW
201°
SSW
Wind chill25°C (78°F)25°C (77°F)25°C (77°F)27°C (80°F)24°C (74°F)26°C (79°F)27°C (80°F)26°C (78°F)
Waves
Height0.1m (0.4ft)0.3m (1.1ft)0.2m (0.5ft)0.4m (1.2ft)0.6m (1.9ft)0.1m (0.3ft)0.2m (0.6ft)0.2m (0.7ft)
Direction 227°
SW
225°
SW
222°
SW
217°
SW
9999°
W
9999°
W
223°
SW
230°
SW
Period2.4 sec.2.4 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.
Significant height0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.5m (1.6ft)0.4m (1.3ft)
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 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 05:11 and will set at 19:16 on the beach(es) of Niihama. The outside temperature will be a high of 81°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 9.3mph km/h (with gusts up to 19.9mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)25°C (77°F)25°C (77°F)27°C (80°F)27°C (80°F)26°C (79°F)27°C (80°F)26°C (79°F)
Perceived temperature29°C (83°F)28°C (82°F)28°C (82°F)30°C (86°F)29°C (85°F)28°C (82°F)30°C (85°F)29°C (84°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity89%91%90%85%81%75%79%81%
Barometric pressure1009 hPa1009 hPa1010 hPa1010 hPa1009 hPa1008 hPa1008 hPa1010 hPa
Cloud cover9%7%10%21%20%11%12%17%
Heat index29°C (83°F)28°C (82°F)28°C (82°F)30°C (86°F)29°C (85°F)28°C (82°F)30°C (85°F)29°C (84°F)
Dew point24°C (74°F)23°C (74°F)23°C (74°F)24°C (75°F)23°C (73°F)21°C (70°F)23°C (73°F)23°C (73°F)
Wind
Speed10km/h (6mph)10km/h (6mph)9km/h (5mph)9km/h (5mph)10km/h (6mph)12km/h (7mph)12km/h (8mph)15km/h (9mph)
Gusts20km/h (12mph)18km/h (11mph)15km/h (10mph)13km/h (8mph)19km/h (12mph)25km/h (16mph)26km/h (16mph)32km/h (20mph)
Direction 213°
SSW
219°
SW
208°
SSW
244°
WSW
230°
SW
219°
SW
215°
SW
202°
SSW
Wind chill26°C (78°F)25°C (77°F)25°C (77°F)27°C (80°F)27°C (80°F)26°C (79°F)27°C (80°F)26°C (79°F)
Waves
Height0.1m (0.5ft)0.1m (0.3ft)0.1m (0.3ft)0.6m (2.0ft)0.3m (1.1ft)0.1m (0.4ft)0.2m (0.6ft)0.6m (1.9ft)
Direction 230°
SW
232°
SW
230°
SW
227°
SW
224°
SW
233°
SW
232°
SW
231°
SW
Period2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.
Significant height0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)
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 23 July 2026

On Thursday 23 July 2026, the sun will rise at 05:12 and will set at 19:15 on the beach(es) of Niihama. The outside temperature will be a high of 81°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 7.5mph km/h (with gusts up to 14.9mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)25°C (77°F)25°C (77°F)27°C (80°F)24°C (75°F)26°C (79°F)27°C (81°F)27°C (80°F)
Perceived temperature28°C (83°F)28°C (82°F)27°C (81°F)30°C (86°F)26°C (78°F)28°C (83°F)30°C (86°F)29°C (84°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%85%86%82%78%75%77%76%
Barometric pressure1010 hPa1009 hPa1010 hPa1010 hPa1010 hPa1009 hPa1008 hPa1010 hPa
Cloud cover15%13%18%18%6%4%8%14%
Heat index28°C (83°F)28°C (82°F)27°C (81°F)30°C (86°F)26°C (78°F)28°C (83°F)30°C (86°F)29°C (84°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)23°C (74°F)20°C (68°F)21°C (70°F)23°C (73°F)22°C (72°F)
Wind
Speed12km/h (7mph)11km/h (7mph)10km/h (6mph)8km/h (5mph)8km/h (5mph)10km/h (6mph)12km/h (7mph)12km/h (7mph)
Gusts24km/h (15mph)22km/h (13mph)19km/h (12mph)12km/h (7mph)17km/h (11mph)21km/h (13mph)24km/h (15mph)24km/h (15mph)
Direction 194°
SSW
205°
SSW
191°
S
229°
SW
254°
WSW
220°
SW
215°
SW
181°
S
Wind chill26°C (79°F)25°C (77°F)25°C (77°F)27°C (80°F)24°C (75°F)26°C (79°F)27°C (81°F)27°C (80°F)
Waves
Height0.5m (1.6ft)0.5m (1.7ft)0.1m (0.3ft)0.1m (0.5ft)0.4m (1.4ft)0.1m (0.5ft)0.1m (0.4ft)0.4m (1.2ft)
Direction 229°
SW
231°
SW
248°
WSW
249°
WSW
9999°
W
233°
SW
228°
SW
228°
SW
Period2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.0 sec.
Significant height0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.4m (1.3ft)0.3m (1ft)0.1m (0.3ft)
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 Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 05:13 and will set at 19:14 on the beach(es) of Niihama. The outside temperature will be a high of 81°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 7.5mph km/h (with gusts up to 16.2mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)25°C (78°F)25°C (77°F)27°C (80°F)24°C (75°F)26°C (78°F)27°C (81°F)27°C (81°F)
Perceived temperature28°C (83°F)28°C (82°F)27°C (81°F)30°C (86°F)26°C (79°F)28°C (82°F)31°C (88°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%81%84%80%76%76%80%73%
Barometric pressure1010 hPa1009 hPa1010 hPa1011 hPa1010 hPa1009 hPa1009 hPa1010 hPa
Cloud cover9%5%3%4%4%3%32%26%
Heat index28°C (83°F)28°C (82°F)27°C (81°F)30°C (86°F)26°C (79°F)28°C (82°F)31°C (88°F)30°C (86°F)
Dew point22°C (71°F)22°C (71°F)22°C (72°F)23°C (73°F)20°C (67°F)21°C (70°F)24°C (74°F)22°C (72°F)
Wind
Speed11km/h (7mph)10km/h (6mph)6km/h (4mph)4km/h (3mph)6km/h (4mph)12km/h (8mph)10km/h (6mph)6km/h (4mph)
Gusts22km/h (14mph)19km/h (12mph)12km/h (7mph)7km/h (4mph)14km/h (8mph)26km/h (16mph)21km/h (13mph)13km/h (8mph)
Direction 188°
S
194°
SSW
200°
SSW
208°
SSW
247°
WSW
214°
SW
200°
SSW
153°
SSE
Wind chill26°C (79°F)25°C (78°F)25°C (77°F)27°C (80°F)24°C (75°F)26°C (78°F)27°C (81°F)27°C (81°F)
Waves
Height0.1m (0.3ft)0.6m (1.8ft)0.1m (0.3ft)0.6m (1.9ft)0.4m (1.4ft)0.1m (0.5ft)0.2m (0.8ft)0.4m (1.3ft)
Direction 227°
SW
227°
SW
254°
WSW
254°
WSW
9999°
W
228°
SW
224°
SW
224°
SW
Period2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.
Significant height0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.3m (1ft)0.4m (1.3ft)0.2m (0.7ft)0.1m (0.3ft)
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 Saturday 25 July 2026

On Saturday 25 July 2026, the sun will rise at 05:13 and will set at 19:14 on the beach(es) of Niihama. The outside temperature will be a high of 83°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 6.2mph km/h (with gusts up to 12.4mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)26°C (78°F)25°C (78°F)27°C (81°F)24°C (76°F)27°C (81°F)28°C (82°F)27°C (81°F)
Perceived temperature29°C (85°F)28°C (83°F)28°C (83°F)31°C (88°F)26°C (79°F)29°C (85°F)32°C (90°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%86%88%80%78%69%78%75%
Barometric pressure1010 hPa1009 hPa1011 hPa1011 hPa1010 hPa1008 hPa1008 hPa1010 hPa
Cloud cover12%12%15%7%7%6%19%29%
Heat index29°C (85°F)28°C (83°F)28°C (83°F)31°C (88°F)26°C (79°F)29°C (85°F)32°C (90°F)30°C (86°F)
Dew point23°C (73°F)23°C (73°F)23°C (74°F)24°C (74°F)20°C (68°F)21°C (70°F)24°C (75°F)22°C (72°F)
Wind
Speed3km/h (2mph)4km/h (2mph)3km/h (2mph)4km/h (2mph)3km/h (2mph)7km/h (4mph)10km/h (6mph)9km/h (6mph)
Gusts6km/h (4mph)8km/h (5mph)6km/h (4mph)6km/h (4mph)7km/h (4mph)15km/h (9mph)20km/h (12mph)20km/h (12mph)
Direction 35°
NE
70°
ENE
86°
E
346°
NNW
332°
NNW
214°
SW
215°
SW
177°
S
Wind chill26°C (79°F)26°C (78°F)25°C (78°F)27°C (81°F)24°C (76°F)27°C (81°F)28°C (82°F)27°C (81°F)
Waves
Height0.3m (1.0ft)0.1m (0.4ft)0.1m (0.3ft)0.2m (0.7ft)0.3m (0.9ft)0.2m (0.5ft)0.2m (0.6ft)0.1m (0.4ft)
Direction 223°
SW
224°
SW
255°
WSW
193°
SSW
9999°
W
226°
SW
221°
SW
221°
SW
Period2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.2 sec.
Significant height0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.3m (1ft)0.5m (1.6ft)0.4m (1.3ft)0.1m (0.3ft)
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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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