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Sullana Weather by Month
Average temperatures, rainfall and humidity for Sullana, Peru, month by month, built from OpenWeather’s historical records. Use it to see what a typical Sullana month looks like before you travel — then check the live Sullana forecast for the days ahead.
Warmest month
February
33°C average high
Coolest month
August
17°C average low
Wettest month
March
158 mm of rain
Driest month
July
2 mm of rain
Average temperature and rainfall in Sullana 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 | 32°C | 22°C | 16°C / 36°C | 37 mm | 63% | 12 km/h |
| February | 33°C | 23°C | 18°C / 37°C | 122 mm | 66% | 10 km/h |
| March | 32°C | 23°C | 16°C / 36°C | 158 mm | 66% | 10 km/h |
| April | 32°C | 22°C | 18°C / 36°C | 66 mm | 64% | 11 km/h |
| May | 31°C | 21°C | 16°C / 35°C | 26 mm | 65% | 12 km/h |
| June | 30°C | 19°C | 13°C / 34°C | 7 mm | 68% | 12 km/h |
| July | 30°C | 18°C | 13°C / 34°C | 2 mm | 70% | 12 km/h |
| August | 30°C | 17°C | 14°C / 35°C | 5 mm | 69% | 12 km/h |
| September | 30°C | 17°C | 14°C / 34°C | 5 mm | 69% | 12 km/h |
| October | 31°C | 18°C | 13°C / 35°C | 16 mm | 66% | 13 km/h |
| November | 31°C | 18°C | 12°C / 34°C | 10 mm | 64% | 13 km/h |
| December | 31°C | 20°C | 14°C / 35°C | 16 mm | 63% | 13 km/h |
Best time to visit Sullana
The most comfortable time to visit Sullana is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around March, totalling about 470 mm a year.
Travellers who prefer heat should aim for February, when highs average 33°C. March is the month to avoid if rain would spoil your plans — it averages 158 mm, roughly 82× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Sullana forecast for what is happening now.