Live Weather & Forecast
Weather in Iwanai
Hokkaido, Japan · Real-time conditions & 3-day outlook
12°C
Feels like 12°C
54°F / Feels 54°F
Partly Cloudy
Iwanai, Hokkaido
🌞 Daytime
Updated: 2026-04-15 11:00
Humidity
34%
Wind
3.6 km/h ESE
Wind Gust
10.8 km/h
Pressure
1016 mb
Visibility
10 km
UV Index
4.9
(Moderate)
Precipitation
0 mm
Cloud Cover
56%
Dew Point
-3.2°C
Wind Degree
118°
Air Quality Index
US EPA: Moderate
UK DEFRA: Low (2)
CO
148.9 μg/m³
NO₂
8.1 μg/m³
O₃
62 μg/m³
SO₂
3 μg/m³
PM 2.5
16.8 μg/m³
PM 10
22.3 μg/m³
Today's Hourly Forecast
24-hour breakdown for Iwanai, Hokkaido
12 AM
1°
Partly Cloudy
1 AM
1°
Clear
2 AM
1°
Clear
3 AM
0°
Clear
4 AM
0°
Partly Cloudy
5 AM
0°
Partly Cloudy
6 AM
2°
Partly Cloudy
7 AM
5°
Partly Cloudy
8 AM
8°
Partly Cloudy
9 AM
10°
Partly Cloudy
10 AM
11°
Partly Cloudy
11 AM
12°
Partly Cloudy
12 PM
13°
Overcast
1 PM
12°
Overcast
2 PM
11°
Patchy rain nearby
3 PM
9°
Patchy rain nearby
4 PM
9°
Patchy rain nearby
5 PM
8°
Patchy rain nearby
6 PM
7°
Overcast
7 PM
6°
Patchy rain nearby
8 PM
6°
Overcast
9 PM
5°
Patchy rain nearby
10 PM
5°
Light drizzle
11 PM
5°
Patchy rain nearby
3-Day Forecast
Daily overview for Iwanai, Hokkaido
Today
Patchy rain nearby
13°
/
0°
🌧️ 88% chance of rain
💧 Avg. humidity: 61%
💨 Max wind: 7.6 km/h
🌧️ Total precip: 0.55 mm
☀️ UV Index: 1.1
🌅 Sunrise: 04:56 AM
🌇 Sunset: 06:19 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Sunny
13°
/
1°
🌧️ 0% chance of rain
💧 Avg. humidity: 65%
💨 Max wind: 8.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 04:55 AM
🌇 Sunset: 06:20 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Sunny
13°
/
2°
🌧️ 0% chance of rain
💧 Avg. humidity: 68%
💨 Max wind: 9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.3
🌅 Sunrise: 04:53 AM
🌇 Sunset: 06:21 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Iwanai
Plan your trip to Iwanai, 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 Iwanai?
Current conditions in Iwanai: Partly Cloudy, temperature 12°C, humidity 34%.
What is the best time to visit Iwanai?
The best time to visit Iwanai is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Iwanai?
Iwanai is located at approximately 43° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Iwanai?
The wettest period in Iwanai is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Iwanai?
For visits to Iwanai during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Iwanai in 2026?
View the 2026 public holidays for Iwanai on our Holidays page.
What are the GPS coordinates used for the weather forecast in Iwanai?
The weather forecast for Iwanai uses coordinates 42.9798, 140.5148.