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:
20°C
68.0°F
°C °F

Condition: Drizzle

Pressure: 964 hPa

Feel like: 23 °C

Temperature: 20°C

Cloud: 92%

Humidity: 99%

Wind: ESE - 5 km/h

Visibility: 9.92 km

Weather forecast

Sun
21 Jun
16°C / 22°C
Moderate Drizzle
Mon
22 Jun
17°C / 24°C
Drizzle
Tue
23 Jun
17°C / 21°C
Moderate Drizzle
Wed
24 Jun
17°C / 22°C
Slight Rain Showers
Thu
25 Jun
19°C / 23°C
Slight Rain Showers
Hourly forecast today:
05:00 AM
20° / 20°
20° / 20°
Drizzle
99% 17 km/h
06:00 AM
19° / 20°
19° / 20°
Drizzle
98% 16 km/h
07:00 AM
19° / 19°
19° / 19°
Drizzle
99% 16 km/h
08:00 AM
19° / 19°
19° / 19°
Drizzle
99% 16 km/h
09:00 AM
19° / 19°
19° / 19°
Moderate Rain
98% 15 km/h
10:00 AM
19° / 19°
19° / 19°
Moderate Rain
97% 15 km/h
11:00 AM
19° / 19°
19° / 19°
Moderate Rain
98% 17 km/h
12:00 PM
19° / 19°
19° / 19°
Moderate Drizzle
99% 21 km/h
13:00 PM
18° / 18°
18° / 18°
Slight Rain
98% 29 km/h
14:00 PM
18° / 18°
18° / 18°
Slight Rain
99% 34 km/h
15:00 PM
18° / 18°
18° / 18°
Slight Rain
98% 35 km/h

30 Day Averages and Extremes

  • Average high 21.7°C
  • Average low 15.53°C
  • Hottest day 27°C (18 June 2026)
  • Coldest day 0°C (03 July 2026)
  • Average humidity 82.33%
  • Days with precipitation 28 days
  • Highest precipitation 88 mm (19 June 2026)

Yesterday's Data

  • Max: 20°C
  • Min: 18°C
  • Total Precipitation: 16 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 mild weather in Gumma, with temperatures between 16ºC to 19ºC (60.8ºF to 66.2ºF), consider wearing:
- Lightweight sweater or cardigan
- Cotton socks
- Comfortable jeans or slacks
- Sun hat (if spending time outdoors)

Temperature

Early
19°C / 20°C
Morning
19°C / 19°C
Afternoon
18°C / 18°C
Evening
18°C / 18°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 443
  • CO 127
  • NH3 0
  • NO2 5
  • O3 72
  • PM10 1
  • PM25 1
  • SO2 3
  • CH4 1,385

Sunrise / Sunset

19:26
10:05