World Resorts Japan Atami Weather

Atami sea water temperature

Current sea water temperature:
+67.8°F
Minimum sea water temperature in December: 70.5°F
Maximum sea water temperature in December: 58.3°F
Average sea water temperature in December: 64.5°F

Sea water temperature for the last 10 days:

December 5 67.8°F November 30 69.1°F
December 4 68.9°F November 29 68.7°F
December 3 69.3°F November 28 68.9°F
December 2 69.6°F November 27 70.0°F
December 1 70.5°F November 26 67.5°F

When is the warmest sea in Atami?

Based on the data about daily sea water temperature for the last three years the warmest sea in Atami was noticed in August, September and July.

Monthly Sea Temperatures in Atami, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 80.7°F. The highest and lowest sea temperatures during the month were 82.9°F and 78.3°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 79.7°F. The highest and lowest sea temperatures during the month were 82.4°F and 76.1°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 80.0°F. The highest and lowest sea temperatures during the month were 82.2°F and 77.0°F.

Best time for vacation in Atami

Sunniest months:
January 17 days
December 17 days
May 13 days
Warmest months:
August 86.1 °F
July 83.4 °F
September 79.9 °F
Warmest sea temp:
August 80.4 °F
September 78.7 °F
July 76.6 °F
Coldest months:
January 48.4 °F
February 49.2 °F
December 53.0 °F
Rainiest months:
September 8 days
June 8 days
July 7 days
Windiest months:
March 8.7 mph
April 8.5 mph
February 8.3 mph

Atami on a weather map

Atami
+43°F
SW 2 mph
Feels like: +43°F
Precip.: 0%
Places in Japan:
Name
°F
+43°F
+48°F
+50°F
+37°F
+43°F
+43°F
+41°F
+39°F
+63°F
+45°F
+30°F
+46°F
+41°F
+43°F
+36°F
24 Hours Forecast
Atami
Local time: 23:03
December 06, saturday
0000
43°F
SW
2 mph
0300
43°F
SW
2 mph
0600
43°F
SW
3 mph
0900
48°F
SW
4 mph
1200
52°F
W
1 mph
1500
54°F
NE
2 mph
1800
46°F
E
4 mph
2100
45°F
E
6 mph
Units of measurement: °C / °F