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:
19°C
66.2°F
°C °F

Condition: Partly Cloudy

Pressure: 972 hPa

Feel like: 21 °C

Temperature: 19°C

Cloud: 57%

Humidity: 83%

Wind: SSE - 3 km/h

Visibility: 7.48 km

Weather forecast

Sun
06 Sep
19°C / 21°C
Heavy Rain
Mon
07 Sep
17°C / 29°C
Thunderstorm With Slight
Tue
08 Sep
19°C / 26°C
Slight Thunderstorm
Wed
09 Sep
17°C / 20°C
Moderate Rain Showers
Thu
10 Sep
17°C / 21°C
Moderate Drizzle
Hourly forecast today:
23:00 PM
16° / 19°
16° / 19°
Partly Cloudy
83% 15 km/h
00:00 AM
16° / 21°
16° / 21°
Partly Cloudy
74% 19 km/h
01:00 AM
16° / 22°
16° / 22°
Mainly Clear
70% 19 km/h
02:00 AM
16° / 21°
16° / 21°
Partly Cloudy
74% 20 km/h
03:00 AM
16° / 21°
16° / 21°
Overcast
76% 25 km/h
04:00 AM
17° / 21°
17° / 21°
Overcast
78% 24 km/h
05:00 AM
17° / 20°
17° / 20°
Overcast
80% 23 km/h
06:00 AM
17° / 20°
17° / 20°
Overcast
79% 21 km/h
07:00 AM
17° / 20°
17° / 20°
Overcast
80% 21 km/h
08:00 AM
17° / 20°
17° / 20°
Overcast
81% 19 km/h
09:00 AM
17° / 20°
17° / 20°
Overcast
83% 18 km/h

30 Day Averages and Extremes

  • Average high 25.13°C
  • Average low 19.13°C
  • Hottest day 33°C (24 August 2026)
  • Coldest day 17°C (05 September 2026)
  • Average humidity 87.6%
  • Days with precipitation 30 days
  • Highest precipitation 90 mm (28 August 2026)

Yesterday's Data

  • Max: 24°C
  • Min: 18°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 warm weather in Gumma, with temperatures between 19ºC to 22ºC (66.2ºF to 71.6ºF), you might consider wearing:
- T-shirt or short-sleeve blouse
- Sunscreen (if spending time outdoors)
- Sunglasses
- Sun hat or cap

Temperature

Early
17°C / 23°C
Morning
18°C / 21°C
Afternoon
18°C / 18°C
Evening
16°C / 17°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 446
  • CO 132
  • NH3 0
  • NO2 5
  • O3 65
  • PM10 7
  • PM25 5
  • SO2 2
  • CH4 1,398

Sunrise / Sunset

20:19
09:06