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.
Iiyama Weather in July
With daytime temperatures of 28°C (82°F) and nighttime lows of 19°C (66°F), July in Iiyama brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Iiyama in July
As part of the rainy season, Iiyama sees around 21 days of rain in July, with an average of 257 mm (10 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Iiyama in July
July in Iiyama sees highs of 28°C (82°F) and lows of 19°C (66°F) overnight. July is part of the summer season. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 19°C (66°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Iiyama in July
You can expect a moderate amount of sunlight, with approximately 154 hours. Even though this month is part of the wet season, you can still see the sun occasionally.If your ideal day consists of dry skies and pleasant temperatures, May typically offers the best circumstances for Iiyama.
Iiyama Temperature in July
Min Temperature
19°C (66°F)
Max Temperature
28°C (82°F)
Chance of Rain
70%
Precipitation
257 mm (10 in)
Rainy days
21 days
Humidity
80% *
Sunshine
154 hours *
Percentage Sunshine
*
* Data from: Joetsu, Japan (30 KM, 18 Miles).
Iiyama Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Iiyama - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Iiyama typically rise from around 26°C (79°F) at the start of July to approximately 30°C (86°F) by the end. Nights are warm, with lows typically ranging from 19°C (66°F) to 23°C (73°F).
Average temperatures in July
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather records for Iiyama in July
Browse day-by-day weather records for Iiyama spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Iiyama historical weather extremes in July
According to our 20 years of weather records for Iiyama, the following extremes were recorded between 2006 and 2026.
- The warmest day in July was on July 13, 2015, with a maximum of 36°C (97°F).
- On July 2, 2026, Iiyama saw its coldest July day with temperatures maxing out at 20°C (68°F).
- The lowest overnight temperature recorded in July was 15°C (59°F) (July 2, 2008).
- The heaviest July precipitation occurred on July 1, 2017, when 115 mm (4.5 in) of precipitation fell.
Best Places in Japan in July
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in July →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Iiyama in July
Warm temperatures in July make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Iiyama in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Iiyama 3-Day Forecast
More climate data for Iiyama
Temperature Rainfall Sunshine Humidity
See the full Iiyama climate overview or explore weather in Japan.
Popular in July
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
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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.