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:
27°C
80.6°F
°C °F

Condition: Mainly Clear

Pressure: 966 hPa

Feel like: 31 °C

Temperature: 27°C

Cloud: 27%

Humidity: 72%

Wind: SE - 5 km/h

Visibility: 37.3 km

Weather forecast

Thu
06 Aug
22°C / 30°C
Slight Thunderstorm
Fri
07 Aug
21°C / 30°C
Thunderstorm With Slight
Sat
08 Aug
20°C / 29°C
Slight Thunderstorm
Sun
09 Aug
20°C / 26°C
Drizzle
Mon
10 Aug
19°C / 28°C
Overcast
Hourly forecast today:
06:00 AM
21° / 27°
21° / 27°
Mainly Clear
72% 28 km/h
07:00 AM
21° / 27°
21° / 27°
Mainly Clear
72% 25 km/h
08:00 AM
21° / 26°
21° / 26°
Mainly Clear
75% 21 km/h
09:00 AM
21° / 25°
21° / 25°
Mainly Clear
80% 16 km/h
10:00 AM
22° / 24°
22° / 24°
Mainly Clear
87% 12 km/h
11:00 AM
22° / 24°
22° / 24°
Partly Cloudy
89% 12 km/h
12:00 PM
22° / 23°
22° / 23°
Drizzle
93% 11 km/h
13:00 PM
22° / 23°
22° / 23°
Drizzle
96% 9 km/h
14:00 PM
22° / 23°
22° / 23°
Drizzle
97% 7 km/h
15:00 PM
22° / 22°
22° / 22°
Mainly Clear
97% 7 km/h
16:00 PM
21° / 22°
21° / 22°
Mainly Clear
96% 5 km/h

30 Day Averages and Extremes

  • Average high 28.53°C
  • Average low 21.17°C
  • Hottest day 34°C (20 July 2026)
  • Coldest day 19°C (03 August 2026)
  • Average humidity 84.5%
  • Days with precipitation 30 days
  • Highest precipitation 87 mm (02 August 2026)

Yesterday's Data

  • Max: 27°C
  • Min: 19°C
  • Total Precipitation: 0 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 29ºC (84.2ºF), consider wearing:
- Open-toed sandals or light sneakers
- Lightweight t-shirt or tank top
- Thin, moisture-wicking socks
- Breathable shorts or skirts

Temperature

Early
21°C / 26°C
Morning
21°C / 25°C
Afternoon
22°C / 22°C
Evening
21°C / 22°C

Air quality

Moderate

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

  • CO2 435
  • CO 126
  • NH3 0
  • NO2 3
  • O3 64
  • PM10 6
  • PM25 5
  • SO2 1
  • CH4 1,390

Sunrise / Sunset

19:54
09:46