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. 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 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
The weather does bring rainfall during this period, between 185 mm (7.3 in) and 210 mm (8.3 in).
Plan accordingly for March, April, May, June, July, August, September and October, when conditions bring the heaviest precipitation. Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
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.
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 3-Day Forecast
Iida on the map
Iida is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Osaka
32°C (90°F) Tokyo30°C (86°F) Naha
30°C (86°F) Kyoto31°C (88°F) Hakone28°C (82°F) Hakuba26°C (79°F) Sapporo24°C (75°F) Niseko24°C (75°F) 
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