Gumma, Japan Weather

  1. Gumma, Japan Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Gumma over the next 12 hours
  7. Temperature and possibility of rain in Gumma in the coming days
  8. Rainfall in Gumma in the coming days
  9. Gumma Weather Summary
  10. Weather averages by month
  11. Gumma's weather
  12. Frequently asked questions
  13. Comments
Gumma, Weather
(Photo by Sora Sagano on Unsplash)

Current conditions

Updated:
26°C
78.8°F
°C °F

Condition: Drizzle

Pressure: 967 hPa

Feel like: 31 °C

Temperature: 26°C

Cloud: 47%

Humidity: 85%

Wind: ESE - 3 km/h

Visibility: 19.56 km

Weather forecast

Fri
07 Aug
21°C / 29°C
Thunderstorm With Slight
Sat
08 Aug
20°C / 28°C
Slight Thunderstorm
Sun
09 Aug
20°C / 29°C
Slight Thunderstorm
Mon
10 Aug
21°C / 29°C
Drizzle
Tue
11 Aug
20°C / 26°C
Slight Thunderstorm
Hourly forecast today:
00:00 AM
23° / 26°
23° / 26°
Drizzle
85% 10 km/h
01:00 AM
23° / 27°
23° / 27°
Drizzle
80% 10 km/h
02:00 AM
23° / 28°
23° / 28°
Mainly Clear
74% 13 km/h
03:00 AM
22° / 28°
22° / 28°
Mainly Clear
70% 18 km/h
04:00 AM
22° / 29°
22° / 29°
Mainly Clear
66% 23 km/h
05:00 AM
22° / 29°
22° / 29°
Mainly Clear
66% 29 km/h
06:00 AM
22° / 29°
22° / 29°
Mainly Clear
67% 29 km/h
07:00 AM
23° / 29°
23° / 29°
Mainly Clear
69% 25 km/h
08:00 AM
23° / 28°
23° / 28°
Mainly Clear
72% 22 km/h
09:00 AM
23° / 27°
23° / 27°
Mainly Clear
77% 20 km/h
10:00 AM
23° / 26°
23° / 26°
Mainly Clear
86% 9 km/h

30 Day Averages and Extremes

  • Average high 27.37°C
  • Average low 19.87°C
  • Hottest day 34°C (21 July 2026)
  • Coldest day 0°C (19 August 2026)
  • Average humidity 80.9%
  • Days with precipitation 29 days
  • Highest precipitation 87 mm (02 August 2026)

Yesterday's Data

  • Max: 29°C
  • Min: 22°C
  • Total Precipitation: 1 mm

Temperature and possibility of rain in Gumma over the next 12 hours

Temperature and possibility of rain in Gumma in the coming days

Rainfall in Gumma in the coming days

Gumma Climate Summary

Gumma features a Humid continental, no dry season, warm summer (Köppen classification: Dfb), with an average annual temperature of 13.22ºC (55.8ºF), which is about -1.97% lower than the national average for Japan. Annually, the city experiences approximately 63.3 millimeters (2.49 inches) of rainfall, spread across 102.74 rainy days, accounting for 28.15% of the year.

Longitude 36.5605388
Latitude 138.8799972
Yearly high temperature 16.56ºC (61.81ºF)
Yearly low temperature 7.59ºC (45.66ºF)
Hottest month August 29.53ºC (85.15ºF)
Coldest month January -3.56ºC (25.59ºF)
Yearly precip 63.3mm (2.49in)
Days with rainfall 102.74 days (28.15%)
Driest month December (65.83%)
Wettest month July (77.86%)

Weather averages by month

Month High / Low (°C) Rain
January 3.85° / -3.56° 5.0 days
February 5.05° / -3.14° 4.64 days
March 9.41° / 0.03° 7.64 days
April 15.03° / 4.51° 8.91 days
May 21.11° / 10.22° 8.36 days
June 23.85° / 14.29° 15.0 days
July 27.82° / 19.0° 16.55 days
August 29.53° / 19.85° 11.64 days
September 24.76° / 15.84° 10.82 days
October 18.58° / 9.96° 6.82 days
November 12.83° / 4.49° 3.91 days
December 6.87° / -0.39° 3.45 days

Gumma's weather

Frequently asked questions

1. What is the hottest month in Gumma?

August has the highest average monthly temperature (daily mean of 29.53ºC) and January are the coolest (daily mean of -3.56ºC).

2. What should I wear in Gumma today?

For today's very hot weather in Gumma, with the high temperatures above 30ºC (86.0ºF), consider wearing:
- Ultra-thin, breathable socks
- High SPF sunscreen for outdoor activities
- Light, natural fabrics (like cotton or linen)
- Sleeveless tops or vests

Temperature

Early
22°C / 28°C
Morning
23°C / 27°C
Afternoon
23°C / 24°C
Evening
23°C / 23°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 440
  • CO 122
  • NH3 0
  • NO2 4
  • O3 52
  • PM10 15
  • PM25 11
  • SO2 3
  • CH4 1,381

Sunrise / Sunset

19:55
09:45