Iwata Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Iwata.
Climate overview of Iwata
Temperatures in Iwata, Shizuoka, Japan, vary greatly throughout the year. August is the hottest month at 32°C (90°F), while January is the coldest at 11°C (52°F).
The city receives considerable rainfall, with around 2142 mm (84 in) annually. June is the wettest month. It has a distinct rainy season from April to July. August is the sunniest month, averaging 7.1 hours of sunshine per day.
Iwata Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Iwata — and find the best time to visit.
Monthly Temperature in Iwata
The climate in Iwata is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in August to a chilly 11°C (52°F) in the coolest month, January.
Nights vary from 25°C (77°F) in August to around 4°C (39°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Iwata
Iwata has a notably wet climate with abundant precipitation, recording 2142 mm (84 in) of rainfall per year. The climate in Iwata shows significant variation throughout the year. Expect heavy rainfall in June, the wettest month, with an average of 283 mm (11 in) of precipitation over 18 rainy days.
In contrast, the driest month December offers drier and sunnier days, with around 76 mm (3 in) of rainfall over 10 rainy days. For more details, please visit our Iwata 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 Iwata
Iwata offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between August (7.1 hours daily) and June (5.0 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Iwata by Month
The relative humidity is high throughout the year in Iwata.
The city experiences its highest humidity in June, reaching 77%. In February, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Iwata
The wettest months are April, May, June, July, August, September and October, when precipitation is at its highest. Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
Frequently asked questions about the climate in Iwata
What is the best time to visit Iwata?
April typically offers the most optimal weather in Iwata. In contrast, February, June, July and September tend to have less optimal conditions. Iwata has a distinct rainy season from April to July.
What temperatures can I expect in Iwata?
Daytime highs range from 11°C (52°F) in January to 32°C (90°F) in August. Nighttime lows range from 4°C (39°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Iwata get?
Annual rainfall is around 2142 mm (84 in). June is the wettest month with 283 mm (11 in), while December is the driest with 76 mm (3 in).
How sunny is Iwata?
Iwata receives around 2,256 hours of sunshine per year. August is the sunniest month with 212 hours, while June is the cloudiest with just 151 hours. Overall, Iwata enjoys abundant sunshine.
Iwata 3-Day Forecast
Iwata 3-Day Forecast
Iwata on the map
Iwata 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) 
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.