Measurements:
°C
°F
CURRENT WEATHER
05:30
Osaka
80°F
S 5 mph
Feels like: 86°F
Precip: 83%
World Resorts Japan Osaka Weather

7 Day Weather Forecast

09.09
wed
DAY
76°F
SE 9 mph
precip
84%
NIGHT
72°F
S 10 mph
precip
12%
09.10
thu
DAY
84°F
S 11 mph
precip
3%
NIGHT
76°F
SW 7 mph
precip
27%
09.11
fri
DAY
80°F
S 6 mph
precip
25%
NIGHT
78°F
SW 4 mph
precip
28%
09.12
sat
DAY
88°F
E 2 mph
precip
9%
NIGHT
82°F
NE 2 mph
precip
20%
09.13
sun
DAY
84°F
SW 6 mph
precip
57%
NIGHT
78°F
SW 6 mph
precip
16%
09.14
mon
DAY
84°F
N 4 mph
precip
20%
NIGHT
76°F
SW 4 mph
precip
75%
09.15
tue
DAY
76°F
W 1 mph
precip
69%
NIGHT
76°F
NE 3 mph
precip
49%

Osaka Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Osaka was 28.1°F. The maximum and minimum values were 24.2°F and 30.6°F respectively.

Osaka on the Weather Map

Best Time to Visit Osaka
The most sunny months:
May 16 days
August 16 days
October 15 days
The most warm months:
August 96.3 °F
July 92.8 °F
September 88.4 °F
Warmest sea temperature:
August 86.3 °F
September 82.8 °F
July 82.7 °F
The most cold months:
January 46.3 °F
February 48.5 °F
December 51.0 °F
The most rainy months:
June 7 days
July 6 days
September 5 days
The most windy months:
January 7 mph
December 7 mph
February 7 mph
more details