Yamagata weather by month

Check out Yamagata weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & UV index

Temperature in Yamagata (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	32	34	41	55	66	72	79	81	72	61	50	39
Min temperature (night-time)	21	21	25	36	46	55	63	66	57	45	34	27
Heat & Humidity	0	0	0	0	0	0	M	H	0	0	0	0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Yamagata

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	4	4	5	6	7	5	5	6	4	4	4	3
Daily hours of daylight	10	11	12	13	14	15	15	14	12	11	10	10
UV Index (Maximum)	2	3	4	6	8	9	10	9	7	5	3	2

Rainfall in Yamagata

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	29	25	24	18	17	19	21	19	20	19	22	27
Average monthly rainfall (inches)	2.7	2.6	2.8	3.4	3.7	5.1	6.6	7.0	6.5	4.0	3.4	2.8

More about Yamagata

Yamagata by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Japan

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

The climate guide for Japan (Yamagata) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Yamagata?

Yamagata has a cold climate with hot summers and some rainfall in all months.

Yamagata weather in January

Expect daytime maximum temperatures of 32°F in Yamagata, Japan in January based on long-term weather averages. There are 4 hours of sunshine per day on average with 29 days with some rainfall and typically 2.7 inches of rainfall in the month, which might fall as snow.

32
32°F max day temperature
4
4 hours of sunshine per day
29
29 days with some rainfall
21
21°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
2.7
2.7 inches of monthly rainfall
2
2 (Low) UV index

Back to months

Yamagata weather in February

Expect daytime maximum temperatures of 34°F in Yamagata, Japan in February based on long-term weather averages. There are 4 hours of sunshine per day on average with 25 days with some rainfall and typically 2.6 inches of rainfall in the month, which might fall as snow.

34
34°F max day temperature
4
4 hours of sunshine per day
25
25 days with some rainfall
21
21°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
2.6
2.6 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Yamagata weather in March

Expect daytime maximum temperatures of 41°F in Yamagata, Japan in March based on long-term weather averages. There are 5 hours of sunshine per day on average with 24 days with some rainfall and typically 2.8 inches of rainfall in the month, which might fall as snow.

41
41°F max day temperature
5
5 hours of sunshine per day
24
24 days with some rainfall
25
25°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
2.8
2.8 inches of monthly rainfall
4
4 (Moderate) UV index

Back to months

Yamagata weather in April

Expect daytime maximum temperatures of 55°F in Yamagata, Japan in April based on long-term weather averages. There are 6 hours of sunshine per day on average with 18 days with some rainfall and typically 3.4 inches of rainfall in the month.

55
55°F max day temperature
6
6 hours of sunshine per day
18
18 days with some rainfall
36
36°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
3.4
3.4 inches of monthly rainfall
6
6 (High) UV index

Back to months

Yamagata weather in May

Expect daytime maximum temperatures of 66°F in Yamagata, Japan in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 3.7 inches of rainfall in the month.

66
66°F max day temperature
7
7 hours of sunshine per day
17
17 days with some rainfall
46
46°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
3.7
3.7 inches of monthly rainfall
8
8 (Very High) UV index

Back to months

Yamagata weather in June

Expect daytime maximum temperatures of 72°F in Yamagata, Japan in June based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 5.1 inches of rainfall in the month.

72
72°F max day temperature
5
5 hours of sunshine per day
19
19 days with some rainfall
55
55°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
5.1
5.1 inches of monthly rainfall
9
9 (Very High) UV index

Back to months

Yamagata weather in July

Expect daytime maximum temperatures of 79°F in Yamagata, Japan in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 21 days with some rainfall and typically 6.6 inches of rainfall in the month.

79
79°F max day temperature
5
5 hours of sunshine per day
21
21 days with some rainfall
63
63°F min night temperature
15
15 hours of daylight per day
M
Moderate heat & humidity
6.6
6.6 inches of monthly rainfall
10
10 (Very High) UV index

Back to months

Yamagata weather in August

Expect daytime maximum temperatures of 81°F in Yamagata, Japan in August and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 19 days with some rainfall and typically 7.0 inches of rainfall in the month.

81
81°F max day temperature
6
6 hours of sunshine per day
19
19 days with some rainfall
66
66°F min night temperature
14
14 hours of daylight per day
H
High heat & humidity
7.0
7.0 inches of monthly rainfall
9
9 (Very High) UV index

Back to months

Yamagata weather in September

Expect daytime maximum temperatures of 72°F in Yamagata, Japan in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 20 days with some rainfall and typically 6.5 inches of rainfall in the month.

72
72°F max day temperature
4
4 hours of sunshine per day
20
20 days with some rainfall
57
57°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
6.5
6.5 inches of monthly rainfall
7
7 (High) UV index

Back to months

Yamagata weather in October

Expect daytime maximum temperatures of 61°F in Yamagata, Japan in October based on long-term weather averages. There are 4 hours of sunshine per day on average with 19 days with some rainfall and typically 4.0 inches of rainfall in the month.

61
61°F max day temperature
4
4 hours of sunshine per day
19
19 days with some rainfall
45
45°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
4.0
4.0 inches of monthly rainfall
5
5 (Moderate) UV index

Back to months

Yamagata weather in November

Expect daytime maximum temperatures of 50°F in Yamagata, Japan in November based on long-term weather averages. There are 4 hours of sunshine per day on average with 22 days with some rainfall and typically 3.4 inches of rainfall in the month.

50
50°F max day temperature
4
4 hours of sunshine per day
22
22 days with some rainfall
34
34°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
3.4
3.4 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Yamagata weather in December

Expect daytime maximum temperatures of 39°F in Yamagata, Japan in December based on long-term weather averages. There are 3 hours of sunshine per day on average with 27 days with some rainfall and typically 2.8 inches of rainfall in the month, which might fall as snow.