See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:33
Sunrise
17:32
Sunset
Moon
Waxing Gibbous
14:44
Moonrise
00:33
Moonset
Daily Forecast
Today
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
Upgrade to access real-time air quality data for Iwai.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Iwai.
View stargazing scoreWeather in Iwai today, September 21, 2026
Iwai starts September 21, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Early hours look the most unsettled, with rain probability near 100% by 09:00. The thickest cloud arrives around 09:00, reaching about 100%.
The temperature range runs from about 21°C up to 25°C. The air stays humid, with relative humidity between 87% and 98% and the peak around 09:00. A lighter breeze peaks around 23:00 near 7.9 km/h.
The second half of the day still looks unsettled, with rain probability around 100% by 12:00. Dense cloud near 100% at 12:00 keeps the feel grey. Expect visibility near 4.5 km, with poorer spells close to 0.4 km. Sunrise is at 05:33 and sunset at 17:32, giving 11 hours 58 minutes of sunlight today.
The practical takeaway for Iwai on September 21, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 25°C.
Frequently asked questions about weather in Iwai
How warm does it get in Iwai?
The warmest month in Iwai is August, with average high temperatures of 32°C. The average temperature during this period is around 28°C.
How cold does it get in Iwai?
The coldest month in Iwai is January, with average low temperatures of 0°C. The average temperature during this period is around 4°C.
What is the wettest time of year in Iwai?
The wettest month in Iwai is June, with an average of 174mm of precipitation.
What is the driest time of year in Iwai?
The driest month in Iwai is December, with an average of 46mm of precipitation.
