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Weather in Kosai, Japan 🇯🇵

Current Weather in Kosai

Clear
25°C
Feels like 29°C. Clear.
🌬️ 4 km/h NNW
💧 83% Humidity
🧭 1014 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 22°C
🌅 Sunrise: 05:17 AM
🌇 Sunset: 06:27 PM
Map Overlays:

In Kosai right now it is 25°C and clear, feeling like 29°C. Humidity is 83% with winds around 4 km/h, and the UV index is 0 (low). In the days ahead, expect temperatures in Kosai from about 25°C to 32°C.

Hourly Forecast for Kosai

05:00
Clear
25°
10%
06:00
Sunny
25°
9%
07:00
Sunny
26°
7%
08:00
Sunny
28°
5%
09:00
Sunny
30°
4%
10:00
Sunny
31°
3%
11:00
Sunny
32°
3%
12:00
Partly Cloudy
32°
5%
13:00
Sunny
31°
3%
14:00
Patchy rain nearby
30°
17%
15:00
Patchy rain nearby
29°
36%
16:00
Patchy rain nearby
29°
13%
17:00
Patchy rain nearby
29°
18%
18:00
Sunny
28°
7%
19:00
Patchy rain nearby
27°
21%
20:00
Patchy rain nearby
27°
19%
21:00
Clear
27°
8%
22:00
Clear
26°
8%
23:00
Clear
26°
9%
00:00
Clear
26°
9%
01:00
Clear
26°
10%
02:00
Clear
26°
10%
03:00
Clear
26°
11%
04:00
Clear
26°
11%

14-Day Forecast for Kosai

Mon, Aug 24
Sunny Sunny
32° / 25°
Tue, Aug 25
Sunny Sunny
31° / 25°
Wed, Aug 26
Sunny Sunny
32° / 26°
Thu, Aug 27
Patchy rain nearby Patchy rain nearby
31° / 24°
Fri, Aug 28
Overcast Overcast
28° / 24°
Sat, Aug 29
Overcast Overcast
33° / 26°
Sun, Aug 30
Patchy rain nearby Patchy rain nearby
29° / 25°
Mon, Aug 31
Cloudy Cloudy
32° / 24°
Tue, Sep 01
Patchy rain nearby Patchy rain nearby
29° / 25°
Wed, Sep 02
Overcast Overcast
28° / 24°
Thu, Sep 03
Overcast Overcast
28° / 23°
Fri, Sep 04
Sunny Sunny
31° / 23°
Sat, Sep 05
Light rain shower Light rain shower
27° / 25°
Sun, Sep 06
Patchy rain nearby Patchy rain nearby
32° / 24°

Additional Forecasts for Kosai

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 124.0 μg/m³
O₃ (Ozone) 45.0 μg/m³
NO₂ (Nitrogen Dioxide) 10.4 μg/m³
SO₂ (Sulphur Dioxide) 2.4 μg/m³
PM2.5 (Fine particles) 10.2 μg/m³
PM10 (Coarse particles) 11.4 μg/m³

Historical Weather

Weather Forecasts for Other Cities in Japan

Browse Weather in Japan by cities in alphabetical order:

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Weather in Japan ›

Best Time to Be Outside in Kosai Today

The most comfortable window in Kosai today looks like 06:00 to 09:00, when it is around 26°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Kosai

What is the temperature in Kosai right now?

It is currently 25°C (77°F) in Kosai, clear (feels like 29°C).

What's the weather like in Kosai right now?

Current weather in Kosai: Clear, humidity 83%, wind 4 km/h NNW.

What is today's forecast for Kosai?

Today in Kosai: high 32°C, low 25°C, sunny. Chance of rain: 36%.

What is the 7-day weather forecast for Kosai?

Daily highs and lows for Kosai:

  • 2026-08-24: 32°C / 25°C
  • 2026-08-25: 31°C / 25°C
  • 2026-08-26: 32°C / 26°C
  • 2026-08-27: 31°C / 24°C
  • 2026-08-28: 28°C / 24°C
  • 2026-08-29: 33°C / 26°C
  • 2026-08-30: 29°C / 25°C
Is it going to rain in Kosai today?

There is a 36% chance of rain in Kosai today. Total expected precipitation: 0.64 mm.

What is the wind speed in Kosai right now?

Wind in Kosai is currently 4 km/h (2 mph) from the NNW.

What is the UV index in Kosai right now?

The UV index in Kosai is currently 0 (low). Sun protection is recommended when the index is 3 or higher.

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