Climate Insights for Iwai

The climate in Iwai is temperate. The average annual temperature is 15°C and approximately 1481mm of precipitation falls per year. Iwai receives a notable amount of rainfall throughout the year, including during its driest month. Iwai is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 0°C. Light snow can occur between January and November.

Temperatures in Iwai vary considerably across the year, with a 32°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 32°C and the mean temperature sits around 27°C. The coldest month is January, when overnight lows fall to 0°C and the daily average is 4°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Iwai is a fairly wet location, receiving approximately 1481mm of precipitation annually, which averages out to around 123mm per month. The wettest month is October, averaging 223mm of rainfall. July and September also tend to see above-average precipitation. The driest month is December, with just 40mm. That's 183mm less than October, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and November, totalling around 28cm annually. January is the snowiest month with approximately 13cm.

Iwai is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Iwai, which began on June 21, 2026. Iwai is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 32°C, while the coldest stretch bottoms out in January near 0°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The table below shows monthly climate averages for Iwai based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.