When is the best time to go to Iiyama
The chart above shows the best time of year to visit Iiyama, Japan. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Iiyama
Iiyama weather by month
Please note our recommendations for when to visit Iiyama are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 2°C | 111mm | 4.3hrs | 10.9hrs |
The climate in Iiyama during January can be summarized as cold and damp.
Based on weather alone, this is probably a time of year to avoid going to Iiyama for your holidays. The weather is often not a good and not conducive to spending time outdoors.
January is in the winter in Iiyama and is typically the coldest month of the year. Daytime maximum temperatures average around a freezing 2°C (36°F), whilst at night -7°C (20°F) is normal.
On average January is the driest month of the year in Iiyama with around 111mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 25 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.3 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 3°C | 84mm | 4.7hrs | 11.7hrs |
February in Iiyama is generally a little damp with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Iiyama for your holidays. The weather is often not a good and not conducive to spending time outdoors.
February is in the winter in Iiyama and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 3°C (37°F), whilst at night -6°C (21°F) is normal.
On average February is the 2nd driest month of the year in Iiyama with around 84mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.7 hours of sunshine per day.
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 6°C | 78mm | 5.8hrs | 12.8hrs |
The weather in March in Iiyama is characteristically cool and reasonably dry.
Although outside the main holiday season, there is still plenty of pretty acceptable weather around this time of year. This makes it an okay time to visit Iiyama.
March is in the spring in Iiyama and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 7°C (44°F), whilst at night -4°C (26°F) is normal.
On average March is the 3rd driest month of the year in Iiyama with around 78mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 22 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.8 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 13°C | 79mm | 6.5hrs | 14hrs |
Iiyama's weather in April is typically cool and reasonably dry in nature.
It is perhaps a good month to visit Iiyama, with some particularly good weather at this time of year.
April is in the spring in Iiyama and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 3°C (37°F) is normal.
On average April is the 4th driest month of the year in Iiyama with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 18°C | 95mm | 6.9hrs | 15hrs |
May is a a little damp month in Iiyama and the temperature is generally mild.
It is perhaps the perfect month to visit Iiyama, with some inordinately good weather at this time of year.
May is in the spring in Iiyama and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 8°C (46°F) is normal.
On average May is the 5th driest month of the year in Iiyama with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.9 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 20°C | 158mm | 5.2hrs | 10.9hrs |
Warm and wet weather often prevails in Iiyama during the month of June
It is perhaps a good month to visit Iiyama, with some inordinately good weather at this time of year.
June is in the summer in Iiyama and is typically the 6th coldest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 13°C (56°F) is normal.
On average June is the 6th driest month of the year in Iiyama with around 158mm 6.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.2 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 24°C | 182mm | 5.2hrs | 11.7hrs |
July in Iiyama is generally wet with the temperature being warm.
It is perhaps the perfect month to visit Iiyama, with some very good weather at this time of year.
July is in the summer in Iiyama and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (80°F), whilst at night 18°C (64°F) is normal.
On average July is the 6th wettest month of the year in Iiyama with around 182mm 7.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.2 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 25°C | 153mm | 6.2hrs | 12.8hrs |
The weather in August in Iiyama is characteristically hot, humid and wet.
It is perhaps the perfect month to visit Iiyama, with some very good weather at this time of year.
August is in the summer in Iiyama and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (83°F), whilst at night 19°C (67°F) is normal.
On average August is the 5th wettest month of the year in Iiyama with around 153mm 6 inches of rain making it a wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.2 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 21°C | 176mm | 4.4hrs | 14hrs |
Iiyama's weather in September is typically warm and wet in nature.
It is perhaps a good month to visit Iiyama, with some inordinately good weather at this time of year.
September is in the fall / autumn in Iiyama and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 15°C (59°F) is normal.
On average September is the 4th wettest month of the year in Iiyama with around 176mm 6.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.4 hours of sunshine per day.
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 15°C | 114mm | 4.9hrs | 15hrs |
October is a damp month in Iiyama and the temperature is generally mild.
It is perhaps a good month to visit Iiyama, with some inordinately good weather at this time of year.
October is in the fall / autumn in Iiyama and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 17°C (63°F), whilst at night 7°C (45°F) is normal.
On average October is the 3rd wettest month of the year in Iiyama with around 114mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.9 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 10°C | 103mm | 4.7hrs | 10.9hrs |
Cool and damp weather often prevails in Iiyama during the month of November
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit Iiyama.
November is in the fall / autumn in Iiyama and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 11°C (53°F), whilst at night 1°C (35°F) is normal.
On average November is the 2nd wettest month of the year in Iiyama with around 103mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.7 hours of sunshine per day.
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 5°C | 107mm | 4.4hrs | 11.7hrs |
December in Iiyama is generally damp with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Iiyama for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
December is in the winter in Iiyama and is typically the warmest month of the year. Daytime maximum temperatures average around a cold 6°C (42°F), whilst at night -4°C (25°F) is normal.
On average December is the wettest month of the year in Iiyama with around 107mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.4 hours of sunshine per day.
Other monthly averages
Iiyama weather stats
| Hottest month: | August | 28°C 82.4°F |
|---|---|---|
| Driest month: | March | 78mm 3.1ins |
| Sunniest month: | April | 6.5hrs |
| Coldest month: | January | 1.9°C 35.4°F |
| Wettest month: | July | 182mm 7.2ins |
| Warmest sea: | August | 25.7°C 78.3°F |
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