Iida Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Iida.
Climate overview of Iida
Iida, Nagano Prefecture, Japan, sees big temperature differences between seasons, with August peaking at 28°C (82°F) and January dropping to 3°C (37°F).
With around 2186 mm (86 in) of annual rain/snowfall, Iida has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has a distinct rainy season from April to October, with warm summers and cold winters. The wettest month is July. The most sunshine falls in January, with an average of 6.8 hours of daily sunshine.
Iida Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Iida - and find the best time to visit.
Monthly Temperature in Iida
Visitors to Iida can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 28°C (82°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).
At night, temperatures range from around 18°C (64°F) in August to -8°C (18°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Iida
Iida is known for its substantial rain/snowfall, with annual precipitation reaching 2186 mm (86 in). Iida can be quite wet during July, receiving approximately 294 mm (12 in) of precipitation over 22 rainy days.
In contrast, during the driest month (December), you will experience much drier conditions, with 99 mm (3.9 in) of precipitation spread across 14 snowy/rainy days. For more details, please visit our Iida Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Iida
Iida experiences moderate variation in sunshine hours across the seasons. With 6.8 hours daily sunshine in January, it dips to 4.7 hours in September, offering a balanced mix of sunny and overcast days.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Iida by Month
The relative humidity is high throughout the year in Iida.
The city experiences its highest humidity in July, reaching 73%. In February, the humidity drops to its lowest level at 54%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Iida
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and August
- Warmest weather: July and August
- Most sunshine: January, March, April, May, August and December
- Seasonal pattern: A distinct rainy season from April to October, with warm summers and cold winters
- Coldest conditions: January, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Iida
What is the best time to visit Iida?
May and August typically offer the most optimal weather in Iida. In contrast, January, February, March, June, July, October, November and December tend to have less optimal conditions. Iida has a distinct rainy season from April to October, with warm summers and cold winters.
What temperatures can I expect in Iida?
Daytime highs range from 3°C (37°F) in January to 28°C (82°F) in August. Nighttime lows range from -8°C (18°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Iida get?
Annual rainfall is around 2186 mm (86 in). July is the wettest month with 294 mm (12 in), while December is the driest with 99 mm (3.9 in).
How sunny is Iida?
Iida receives around 2,178 hours of sunshine per year. January is the sunniest month with 204 hours, while September is the cloudiest with just 142 hours. Overall, Iida enjoys abundant sunshine.
Iida 3-Day Forecast
Iida on the map
Iida is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Chase the autumn leaves in Japan
Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.
Walk the 88 temple circuit
We recommend walking the 88 temple circuit from April til October. Although June, July and August can be a bit wet, hot and humid.
The famous bamboo forests of Arashiyama
The famous bamboo forests of Arashiyama lie just outside the city center of Kyoto and is unique in the world. If you look at photos of this bamboo forest, it looks like you have landed in a fairy-tale world.
10 reasons why you should visit Japan in winter
Here are 10 reasons why you should plan a winter trip to Japan. During this period, popular sights are less busy and prices for flights and hotels much cheaper.