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:
18°C
64.4°F
°C °F

Condition: Drizzle

Pressure: 971 hPa

Feel like: 21 °C

Temperature: 18°C

Cloud: 87%

Humidity: 91%

Wind: NE - 1 km/h

Visibility: 4.7 km

Weather forecast

Mon
26 Oct
10°C / 23°C
Drizzle
Tue
27 Oct
6°C / 12°C
Drizzle
Wed
28 Oct
3°C / 13°C
Overcast
Thu
29 Oct
8°C / 19°C
Overcast
Fri
30 Oct
8°C / 22°C
Drizzle
Hourly forecast today:
08:00 AM
17° / 18°
17° / 18°
Drizzle
91% 11 km/h
09:00 AM
16° / 17°
16° / 17°
Moderate Drizzle
93% 10 km/h
10:00 AM
15° / 16°
15° / 16°
Drizzle
90% 7 km/h
11:00 AM
15° / 16°
15° / 16°
Drizzle
92% 7 km/h
12:00 PM
15° / 16°
15° / 16°
Moderate Drizzle
93% 5 km/h
13:00 PM
14° / 16°
14° / 16°
Drizzle Dense Intensity
91% 7 km/h
14:00 PM
14° / 16°
14° / 16°
Moderate Drizzle
92% 5 km/h
15:00 PM
14° / 16°
14° / 16°
Drizzle
91% 6 km/h
16:00 PM
14° / 15°
14° / 15°
Drizzle
93% 6 km/h
17:00 PM
14° / 15°
14° / 15°
Moderate Drizzle
93% 4 km/h
18:00 PM
14° / 15°
14° / 15°
Slight Rain
94% 4 km/h

30 Day Averages and Extremes

  • Average high 18.33°C
  • Average low 9.03°C
  • Hottest day 29°C (20 October 2026)
  • Coldest day 0°C (07 November 2026)
  • Average humidity 74.23%
  • Days with precipitation 22 days
  • Highest precipitation 85 mm (25 October 2026)

Yesterday's Data

  • Max: 19°C
  • Min: 14°C
  • Total Precipitation: 8 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 14ºC to 17ºC (57.2ºF to 62.6ºF), consider wearing:
- Lightweight sweater or cardigan
- Cotton socks
- Comfortable jeans or slacks
- Sun hat (if spending time outdoors)

Temperature

Early
17°C / 18°C
Morning
16°C / 17°C
Afternoon
14°C / 16°C
Evening
14°C / 15°C

Air quality

Moderate

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

  • CO2 454
  • CO 162
  • NH3 0
  • NO2 9
  • O3 43
  • PM10 3
  • PM25 3
  • SO2 1
  • CH4 1,388

Sunrise / Sunset

21:01
07:54