Annual mean 13°C · wettest around December · prevailing wind NW
Warmest
30.1 °C
Coldest
2.5 °C
Wettest
33%
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 Yamagata 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 -1°C. Yamagata has no sharply defined rainy season: the chance of rain on a given day runs from 16% in March, the driest month, to 27% in December, the wettest. Winds in Yamagata are highest in April, averaging 3.2 m/s (12 km/h), and lightest in September, at 2.4 m/s (9 km/h). The prevailing wind is from the NW. The clearest skies in Yamagata come in April, when the sky is typically 67% covered; July is the cloudiest month, at 77%.
Month by month Yamagata 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
-1°C
-2°C
25%
75%
2.9 m/s
0
0
4
February
4°C
-1°C
-1°C
21%
71%
3.1 m/s
0
0
7
March
9°C
3°C
4°C
16%
68%
3.1 m/s
4
0
31
April
15°C
8°C
11°C
17%
67%
3.2 m/s
26
1
67
May
20°C
14°C
18°C
17%
68%
2.9 m/s
70
9
72
June
24°C
19°C
24°C
17%
76%
2.8 m/s
68
36
41
July
28°C
23°C
30°C
23%
77%
2.5 m/s
30
48
9
August
29°C
24°C
32°C
22%
73%
2.6 m/s
18
44
5
September
25°C
19°C
26°C
20%
76%
2.4 m/s
59
41
30
October
18°C
13°C
17°C
17%
72%
2.4 m/s
61
6
76
November
12°C
6°C
9°C
16%
68%
2.6 m/s
16
0
61
December
5°C
1°C
1°C
27%
75%
2.8 m/s
0
0
14
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 Yamagata weather by season
Year round, Yamagata 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 -1°C to 24°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around December and least likely around March. 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.
Yamagata weather in winterDecember to February
High 4°CLow -0°CRain 24%
Winter in Yamagata has typical daily highs of about 4°C and lows of about -0°C, with a 24% chance of rain on a given day.
Yamagata weather in springMarch to May
High 15°CLow 8°CRain 17%
Spring in Yamagata has typical daily highs of about 15°C and lows of about 8°C, with a 17% chance of rain on a given day.
Yamagata weather in summerJune to August
High 27°CLow 22°CRain 21%
Summer in Yamagata has typical daily highs of about 27°C and lows of about 22°C, with a 21% chance of rain on a given day.
Yamagata weather in autumnSeptember to November
High 18°CLow 13°CRain 18%
Autumn in Yamagata has typical daily highs of about 18°C and lows of about 13°C, with a 18% chance of rain on a given day.
When is the rainy season in Yamagata?
Yamagata has no sharply defined rainy season: the chance of rain on a given day runs from 16% in March, the driest month, to 27% in December, the wettest.
What time of year is Yamagata windiest?
Winds in Yamagata are highest in April, averaging 3.2 m/s (12 km/h), and lightest in September, at 2.4 m/s (9 km/h). The prevailing wind is from the NW.
What is the average temperature in Yamagata year round?
The average temperature in Yamagata 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 -1°C.