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: Overcast

Pressure: 955 hPa

Feel like: 21 °C

Temperature: 18°C

Cloud: 91%

Humidity: 95%

Wind: SSW - 3 km/h

Visibility: 2.98 km

Weather forecast

Mon
22 Jun
16°C / 23°C
Overcast
Tue
23 Jun
15°C / 24°C
Moderate Drizzle
Wed
24 Jun
18°C / 19°C
Moderate Rain Showers
Thu
25 Jun
17°C / 25°C
Slight Thunderstorm
Fri
26 Jun
15°C / 26°C
Overcast
Hourly forecast today:
20:00 PM
17° / 18°
17° / 18°
Overcast
95% 7 km/h
21:00 PM
17° / 19°
17° / 19°
Overcast
92% 9 km/h
22:00 PM
17° / 20°
17° / 20°
Overcast
85% 8 km/h
23:00 PM
18° / 21°
18° / 21°
Overcast
82% 13 km/h
00:00 AM
18° / 22°
18° / 22°
Overcast
77% 17 km/h
01:00 AM
17° / 23°
17° / 23°
Partly Cloudy
71% 22 km/h
02:00 AM
17° / 23°
17° / 23°
Overcast
67% 27 km/h
03:00 AM
16° / 23°
16° / 23°
Partly Cloudy
64% 28 km/h
04:00 AM
16° / 23°
16° / 23°
Partly Cloudy
65% 27 km/h
05:00 AM
16° / 23°
16° / 23°
Overcast
65% 25 km/h
06:00 AM
16° / 22°
16° / 22°
Overcast
67% 21 km/h

30 Day Averages and Extremes

  • Average high 22.8°C
  • Average low 16.43°C
  • Hottest day 27°C (18 June 2026)
  • Coldest day 13°C (10 June 2026)
  • Average humidity 85.03%
  • Days with precipitation 28 days
  • Highest precipitation 98 mm (19 June 2026)

Yesterday's Data

  • Max: 24°C
  • Min: 18°C
  • Total Precipitation: 7 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 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- Sunglasses
- Sunscreen (if spending time outdoors)
- Comfortable sandals or sneakers
- Sun hat or cap

Temperature

Early
20°C / 23°C
Morning
20°C / 23°C
Afternoon
19°C / 19°C
Evening
17°C / 19°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 476
  • CO 106
  • NH3 0
  • NO2 11
  • O3 28
  • PM10 9
  • PM25 9
  • SO2 0
  • CH4 1,382

Sunrise / Sunset

19:26
10:06