Live Weather & Forecast
Weather in Koshi
Kumamoto, Japan · Real-time conditions & 3-day outlook
35°C
Feels like 34°C
95°F / Feels 93°F
Clear
Koshi, Kumamoto
🌞 Daytime
Updated: 2026-04-17 18:00
Humidity
23%
Wind
11.5 km/h NE
Wind Gust
23.1 km/h
Pressure
1004 mb
Visibility
10 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
9%
Dew Point
10.7°C
Wind Degree
36°
Air Quality Index
US EPA: Unhealthy for Sensitive Groups
UK DEFRA: Moderate (6)
CO
301.9 μg/m³
NO₂
1.9 μg/m³
O₃
169 μg/m³
SO₂
3.9 μg/m³
PM 2.5
52.1 μg/m³
PM 10
72.4 μg/m³
Today's Hourly Forecast
24-hour breakdown for Koshi, Kumamoto
12 AM
27°
Clear
1 AM
26°
Clear
2 AM
25°
Clear
3 AM
25°
Clear
4 AM
25°
Clear
5 AM
24°
Sunny
6 AM
26°
Sunny
7 AM
29°
Sunny
8 AM
31°
Sunny
9 AM
33°
Sunny
10 AM
35°
Sunny
11 AM
36°
Sunny
12 PM
37°
Sunny
1 PM
38°
Sunny
2 PM
39°
Sunny
3 PM
39°
Sunny
4 PM
39°
Sunny
5 PM
38°
Sunny
6 PM
35°
Clear
7 PM
33°
Clear
8 PM
32°
Clear
9 PM
31°
Clear
10 PM
30°
Clear
11 PM
30°
Clear
3-Day Forecast
Daily overview for Koshi, Kumamoto
Today
Sunny
39°
/
24°
🌧️ 0% chance of rain
💧 Avg. humidity: 39%
💨 Max wind: 25.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.2
🌅 Sunrise: 05:19 AM
🌇 Sunset: 06:08 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Sunny
42°
/
27°
🌧️ 0% chance of rain
💧 Avg. humidity: 39%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 0.03 mm
☀️ UV Index: 2.1
🌅 Sunrise: 05:18 AM
🌇 Sunset: 06:08 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Sunny
39°
/
26°
🌧️ 0% chance of rain
💧 Avg. humidity: 50%
💨 Max wind: 32 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.3
🌅 Sunrise: 05:17 AM
🌇 Sunset: 06:09 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Best Time to Visit Koshi
Plan your trip to Koshi, Japan around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Koshi?
Current conditions in Koshi: Clear, temperature 35°C, humidity 23%.
What is the best time to visit Koshi?
The best time to visit Koshi is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Koshi?
Koshi is located at approximately 26.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Koshi?
The wettest period in Koshi is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Koshi?
For visits to Koshi during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Koshi in 2026?
View the 2026 public holidays for Koshi on our Holidays page.
What are the GPS coordinates used for the weather forecast in Koshi?
The weather forecast for Koshi uses coordinates 26.1794, 86.5573.