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 June
With daytime temperatures of 24°C (75°F) and nighttime lows of 15°C (59°F), June in Iiyama brings high temperatures during the day. Do keep in mind that June is part of the rainy season, with frequent and often heavy rainfall.
Rainfall in Iiyama in June
Iiyama is in the rainy season in June, with rain on around 20 days and an average of 192 mm (7.6 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Iiyama in June
Expect highs of 24°C (75°F) in Iiyama in June, with nights dropping to around 15°C (59°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 15°C (59°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Iiyama in June
The area experiences a moderate amount of sunshine, with approximately 151 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.If you prefer dry days with pleasant temperatures, May typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Iiyama Temperature in June
Min Temperature
15°C (59°F)
Max Temperature
24°C (75°F)
Chance of Rain
66%
Precipitation
192 mm (7.6 in)
Rainy days
20 days
Humidity
77% *
Sunshine
151 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 stay consistent throughout June, with daily highs averaging around 24°C (75°F). Nights are pleasant, with lows typically ranging from 14°C (57°F) to 19°C (66°F).
Average temperatures in June
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 June
Historical weather records for Iiyama in June
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 June
Our historical data for Iiyama spans 2006 to 2026, revealing these weather extremes.
- On June 29, 2022, temperatures climbed to 34°C (93°F), marking the warmest June day on record.
- The coldest June day was on June 9, 2026, with a maximum of 17°C (63°F).
- Nighttime temperatures dropped to 5°C (41°F) on June 1, 2011, marking the coldest June night on record.
- The wettest June day on record brought 69 mm (2.7 in) of precipitation to Iiyama (June 19, 2013).
Best Places in Japan in June
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in June →
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 June
Comfortable temperatures call for an easy wardrobe in June. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Iiyama in June
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Camping6/10
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 June
Where to go in June - 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
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