Measurements:
°C
°F
Atami
68°F
SW 7 mph
Feels like: 68°F
Precip: 21%
World Resorts Japan Atami Weather

Atami Sea Water Temperature

Current Sea Water Temperature:
+71.8°F
Maximum Sea Water Temperature in June: 80.8°F
Minimum Sea Water Temperature in June: 68.6°F
Average water temperature in June: 73.0°F

Sea Water Temperature for the Last 10 Days:

June 09 71.8°F June 04 72.2°F
June 08 72.2°F June 03 72.4°F
June 07 71.8°F June 01 72.4°F
June 06 71.8°F May 31 72.2°F
June 05 72.2°F May 30 71.8°F

When is the Warmest Sea for Atami?

According to our data for the last three years for Atami the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Atami was 84.2°F. The maximum and minimum values were 81.4°F and 86.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Atami was 83.0°F. The maximum and minimum values were 79.0°F and 86.0°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Atami was 83.3°F. The maximum and minimum values were 80.0°F and 85.8°F respectively.

Best Time to Visit Atami
The most sunny months:
January 17 days
December 17 days
May 13 days
The most warm months:
August 90.1 °F
July 87.1 °F
September 83.3 °F
Warmest sea temperature:
August 83.7 °F
September 81.9 °F
July 79.5 °F
The most cold months:
January 48.1 °F
February 49.2 °F
December 53.3 °F
The most rainy months:
September 8 days
June 8 days
July 7 days
The most windy months:
March 8 mph
April 8 mph
February 8 mph

Atami on the Weather Map

Japan Resorts:
NAME
Atami +68
Fukuoka +74
Hakone +68
Hiroshima +74
Kamakura +68
Kobe +70
Kyoto +72
Nagasaki +74
Nagoya +74
Nara +72
Okinawa +76
Osaka +72
Sapporo +56
Tokyo +66
Yokohama +66
24 Hours Weather Forecast
Atami
Local time: 09:25
10 jun, wednesday
1200 70°F
SW
12 mph
1500 68°F
SW
8 mph
1800 66°F
SW
2 mph
2100 64°F
SW
2 mph
11 jun, thursday
0000 66°F
W
3 mph
0300 64°F
SW
2 mph
0600 66°F
W
2 mph
0900 70°F
W
3 mph