Oyama Weather Year-Round — Best Time to Visit
Oyama, Japan has mild weather year-round. The best time to visit is August (score: 73/100). Annual average high: 18.9°C, total rainfall: 1509mm.
When is the best time to visit Oyama?
73
August is the best month to visit Oyama with a travel score of 73/100 (Good).
Expect highs of 30.2°C, 15 rain days, and 9.4 hours of daily sunshine.
View August weather details →Travel Score by Month
63
Jan
63
Feb
62
Mar
68
Apr
72
May
70
Jun
67
Jul
73
Aug
69
Sep
68
Oct
65
Nov
63
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Oyama each month?
18.9°C
Avg High
10°C
Avg Low
1509mm
Annual Rain
How much rain does Oyama get?
Oyama receives 1509mm of rain annually. The wettest month is typically September with 198mm, while January is the driest.
What is the weather like each month in Oyama?
January
63
8°C
Low: -2°C
5 rain days
Good
February
63
9°C
Low: -1°C
7 rain days
Good
March
62
13°C
Low: 2°C
11 rain days
Good
April
68
18°C
Low: 7°C
12 rain days
Good
May
72
23°C
Low: 13°C
13 rain days
Good
June
70
25°C
Low: 17°C
15 rain days
Good
July
67
29°C
Low: 22°C
17 rain days
Good
August
Best time to visit73
30°C
Low: 23°C
15 rain days
Good
September
69
26°C
Low: 19°C
15 rain days
Good
October
68
21°C
Low: 13°C
13 rain days
Good
November
65
15°C
Low: 6°C
9 rain days
Good
December
63
10°C
Low: 1°C
6 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31