Iwo weather by month
Warmest month
February
37°C average high
Coolest month
January
20°C average low
Wettest month
September
158 mm of rain
Driest month
January
7 mm of rain
Average temperature and rainfall in Iwo by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 35°C | 20°C | 13°C / 39°C | 7 mm | 51% | 7 km/h |
| February | 37°C | 22°C | 18°C / 41°C | 40 mm | 57% | 7 km/h |
| March | 36°C | 23°C | 20°C / 41°C | 74 mm | 71% | 9 km/h |
| April | 35°C | 23°C | 22°C / 40°C | 79 mm | 75% | 10 km/h |
| May | 33°C | 23°C | 21°C / 38°C | 67 mm | 81% | 9 km/h |
| June | 30°C | 22°C | 20°C / 34°C | 94 mm | 86% | 10 km/h |
| July | 27°C | 21°C | 20°C / 30°C | 156 mm | 90% | 10 km/h |
| August | 27°C | 21°C | 19°C / 30°C | 149 mm | 91% | 9 km/h |
| September | 28°C | 22°C | 20°C / 31°C | 158 mm | 91% | 8 km/h |
| October | 30°C | 22°C | 20°C / 34°C | 74 mm | 88% | 7 km/h |
| November | 33°C | 22°C | 19°C / 36°C | 29 mm | 76% | 6 km/h |
| December | 34°C | 21°C | 14°C / 38°C | 7 mm | 57% | 7 km/h |
Frost and snow-likely months in Iwo
No month in Iwo averages a night of 2°C or below. The coldest month is January with an average low of 20°C and a record low of 13°C, so frost is rare and snow is very unlikely.
These records carry temperature and precipitation, not snowfall totals.
Best time to visit Iwo
The most comfortable time to visit Iwo is generally October to December, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around September, totalling about 936 mm a year.
Travellers who prefer heat should aim for February, when highs average 37°C. September is the month to avoid if rain would spoil your plans — it averages 158 mm, roughly 21× the rainfall of the driest month (January).
Iwo climate: your questions
Is it going to snow in Iwo this year?
No: the coldest month in Iwo is January with an average low of 20°C and a record low of 13°C, so snow is very unlikely. What is falling now: Iwo weather today.
When is the best time to visit Iwo?
July to August and October are the most comfortable months in Iwo, with highs near 28°C. February is the warmest month, averaging 37°C by day; September is the wettest, with 158 mm; and January is the coolest, with lows near 20°C. What it is doing today: Iwo weather today.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Iwo forecast for what is happening now.
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