Iwanai Weather in May
May in Iwanai brings moderate temperatures around 15°C (59°F) during the day, dropping to 7°C (45°F) at night, with quite a bit of rainfall expected, averaging around 88 mm (3.5 in) for the month.
Rainfall in Iwanai in May
Historically, the month has about 18 days of rain, averaging 88 mm (3.5 in) in total. With rain spread across many days but low totals, showers are typically short and light rather than heavy.
Temperature in Iwanai in May
Expect highs of 15°C (59°F) in Iwanai in May, with nights dropping to around 7°C (45°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Iwanai in May
The days are predominantly sunny, with an estimated total of around 199 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.Should you favor a climate that's both dry and comfortably warm, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Iwanai's climate page.
Iwanai Temperature in May
Min Temperature
7°C (45°F)
Max Temperature
15°C (59°F)
Chance of Rain
60%
Precipitation
88 mm (3.5 in)
Rainy days
18 days
Humidity
66% *
Sunshine
199 hours *
Percentage Sunshine
*
Best Places in Japan in May
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in May →
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What to Wear in Iwanai in May
Pack for changing conditions in Iwanai in May. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Iwanai in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Iwanai's climate page.
Temperature Rainfall Sunshine Humidity
See the full Iwanai climate overview or explore weather in Japan.
