I often take day trips in Japan, but this Gunma day trip was a real surprise. It wasn't your typical visit to tofu skin or wineries; it was a much closer connection with nature, showing you the remote mountains and wilderness of the Japanese countryside – something most day trips don't offer. It was truly unique and well worth the trip. Our guide, Cathy Cheung, was incredibly patient and professional, providing excellent service. Thank you, Cathy, for your care; I hope to meet you again sometime.
Anonymous User
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Numata Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Numata year round climate
Spring (March–May): Average 6.7–15.9°C, mild climate but with relatively high rainfall, especially in May. Common activities: Picnics, flower viewing (e.g., cherry blossoms, azaleas, depending on blooming season). Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 20.4–26.4°C, hot and humid with abundant rainfall; take precautions against heatstroke. Common activities: Summer resorts (e.g., mountain streams), outdoor activities (be mindful of sun protection and rain). Recommended clothing: Light and breathable clothing, sun hat, rain gear.
Autumn (September–November): Average 9.6–23.6°C, pleasant climate with gradually decreasing rainfall. Common activities: Autumn foliage viewing (depending on the timing of leaf color change), hiking. Recommended clothing: Light jacket, long-sleeved shirt; note the significant temperature difference between day and night.
Winter (December–February): Average 0.9–4.5°C, cold and dry with low rainfall. Common activities: Skiing (requires travel to nearby areas), hot spring bathing. Recommended clothing: Thick coat, warm clothing, hat, gloves, scarf.
Numata climatological average
Annual average temperature: approx. 13.6°C / Annual rainfall: approx. 1323 mm / Summer humidity: 70%–80% / Rainiest month: August
Numata monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
0.9°C
23.6
February
2.1°C
45.3
March
6.7°C
93.5
April
12.5°C
112.1
May
15.9°C
163.8
June
20.4°C
182.5
July
25.2°C
174.2
August
26.4°C
188.3
September
23.6°C
183.4
October
15°C
78
November
9.6°C
57.6
December
4.5°C
21
Numata weather for the next seven days
8/3
Monday
Fog
21.7°C/19.3°C
8/4
Tuesday
Patchy rain nearby
24.9°C/17.3°C
8/5
Wednesday
Patchy rain nearby
26.7°C/16.8°C
8/6
Thursday
Patchy rain nearby
28.3°C/17.6°C
8/7
Friday
Light rain shower
27.8°C/18.1°C
8/8
Saturday
Patchy rain nearby
26.8°C/17°C
8/9
Sunday
Mist
27.4°C/15.6°C
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