Annual mean 16°C · wettest around June · prevailing wind SW
Warmest
31.3 °C
Coldest
6.9 °C
Wettest
25%
Windiest
3.8 m/s
Prevailing
SW
3.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Onomichi over the whole year is 16°C. August is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 2°C. Onomichi has no sharply defined rainy season: the chance of rain on a given day runs from 8% in January, the driest month, to 21% in June, the wettest. Winds in Onomichi are highest in January, averaging 2.8 m/s (10 km/h), and lightest in July, at 2.1 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Onomichi come in November, when the sky is typically 59% covered; June is the cloudiest month, at 75%.
Month by month Onomichi climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
8°C
2°C
3°C
8%
63%
2.8 m/s
0
0
27
February
8°C
2°C
4°C
11%
64%
2.8 m/s
1
0
28
March
12°C
6°C
9°C
16%
65%
2.6 m/s
13
0
62
April
17°C
11°C
15°C
17%
65%
2.5 m/s
54
1
82
May
21°C
15°C
20°C
16%
68%
2.3 m/s
84
13
69
June
24°C
20°C
25°C
21%
75%
2.2 m/s
67
48
29
July
29°C
24°C
32°C
19%
72%
2.1 m/s
14
49
2
August
30°C
25°C
34°C
13%
67%
2.4 m/s
7
36
1
September
27°C
22°C
28°C
19%
75%
2.5 m/s
40
55
14
October
21°C
15°C
20°C
13%
66%
2.5 m/s
75
21
64
November
16°C
9°C
13°C
9%
59%
2.4 m/s
43
1
81
December
10°C
4°C
6°C
8%
64%
2.7 m/s
3
0
44
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Onomichi weather by season
Year round, Onomichi has days of about 8°C at their warmest in January, its coolest month, and 30°C in August, its warmest; the coolest hours of the day run from 2°C to 25°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around June and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Onomichi weather in winterDecember to February
High 8°CLow 3°CRain 9%
Winter in Onomichi has typical daily highs of about 8°C and lows of about 3°C, with a 9% chance of rain on a given day.
Onomichi weather in springMarch to May
High 17°CLow 11°CRain 16%
Spring in Onomichi has typical daily highs of about 17°C and lows of about 11°C, with a 16% chance of rain on a given day.
Onomichi weather in summerJune to August
High 28°CLow 23°CRain 18%
Summer in Onomichi has typical daily highs of about 28°C and lows of about 23°C, with a 18% chance of rain on a given day.
Onomichi weather in autumnSeptember to November
High 21°CLow 16°CRain 14%
Autumn in Onomichi has typical daily highs of about 21°C and lows of about 16°C, with a 14% chance of rain on a given day.
When is the rainy season in Onomichi?
Onomichi has no sharply defined rainy season: the chance of rain on a given day runs from 8% in January, the driest month, to 21% in June, the wettest.
What time of year is Onomichi windiest?
Winds in Onomichi are highest in January, averaging 2.8 m/s (10 km/h), and lightest in July, at 2.1 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Onomichi year round?
The average temperature in Onomichi over the whole year is 16°C. August is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 2°C.