Annual mean 13°C · wettest around July · prevailing wind NW
Warmest
30.3 °C
Coldest
2.2 °C
Wettest
34%
Windiest
4.3 m/s
Prevailing
NW
3.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Shiojiri over the whole year is 13°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -3°C. The rainy (wet) season in Shiojiri runs from June to July, peaking in July with a 24% chance of rain on a given day. The dry season is October to May; January is the driest month, at 9%. Winds in Shiojiri are highest in April, averaging 3.5 m/s (13 km/h), and lightest in July, at 2.6 m/s (9 km/h). The prevailing wind is from the NW. The clearest skies in Shiojiri come in January, when the sky is typically 59% covered; September is the cloudiest month, at 78%.
Month by month Shiojiri 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
3°C
-3°C
-2°C
9%
59%
2.8 m/s
0
0
3
February
4°C
-2°C
-1°C
10%
62%
3.0 m/s
0
0
7
March
9°C
2°C
4°C
14%
64%
3.3 m/s
4
0
35
April
15°C
7°C
11°C
15%
66%
3.5 m/s
30
1
70
May
20°C
13°C
17°C
15%
69%
3.1 m/s
70
7
75
June
24°C
17°C
23°C
19%
75%
2.8 m/s
75
32
47
July
28°C
22°C
29°C
24%
76%
2.6 m/s
31
61
9
August
29°C
23°C
30°C
16%
72%
2.7 m/s
21
62
5
September
24°C
19°C
25°C
20%
78%
2.6 m/s
64
43
35
October
17°C
12°C
15°C
17%
71%
2.7 m/s
51
5
76
November
12°C
5°C
8°C
10%
61%
2.7 m/s
11
0
60
December
6°C
0°C
1°C
9%
60%
2.7 m/s
0
0
13
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 Shiojiri weather by season
Year round, Shiojiri has days of about 3°C at their warmest in January, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from -3°C to 23°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around July 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.
Shiojiri weather in winterDecember to February
High 4°CLow -2°CRain 9%
Winter in Shiojiri has typical daily highs of about 4°C and lows of about -2°C, with a 9% chance of rain on a given day.
Shiojiri weather in springMarch to May
High 15°CLow 7°CRain 15%
Spring in Shiojiri has typical daily highs of about 15°C and lows of about 7°C, with a 15% chance of rain on a given day.
Shiojiri weather in summerJune to August
High 27°CLow 21°CRain 20%
Summer in Shiojiri has typical daily highs of about 27°C and lows of about 21°C, with a 20% chance of rain on a given day.
Shiojiri weather in autumnSeptember to November
High 18°CLow 12°CRain 16%
Autumn in Shiojiri has typical daily highs of about 18°C and lows of about 12°C, with a 16% chance of rain on a given day.
When is the rainy season in Shiojiri?
The rainy (wet) season in Shiojiri runs from June to July, peaking in July with a 24% chance of rain on a given day. The dry season is October to May; January is the driest month, at 9%.
What time of year is Shiojiri windiest?
Winds in Shiojiri are highest in April, averaging 3.5 m/s (13 km/h), and lightest in July, at 2.6 m/s (9 km/h). The prevailing wind is from the NW.
What is the average temperature in Shiojiri year round?
The average temperature in Shiojiri over the whole year is 13°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -3°C.