Sullana Weather & Climate: Best Time to Visit

The climate in Sullana remains fairly constant, offering very warm temperatures throughout the year. On average, daytime temperatures range from a very warm 34°C (93°F) in March to a comfortable 29°C (84°F) in August.

Nighttime temperatures range from 23°C (73°F) in March to 17°C (63°F) in August.

Check out our detailed temperature page for more information.

Temperature ranges by month

Sullana's climate is marked by below-average rainfall, accumulating 391 mm (15 in) of precipitation yearly. The seasons in Sullana bring significant changes in precipitation. The wettest month, March, receives high rainfall, with an average of 138 mm (5.4 in) of precipitation. This rainfall is distributed across 5 rainy days.

In contrast, the driest month, August, experiences much less rainfall, totaling 0.4 mm (0.02 in) over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Sullana Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

The relative humidity is moderate throughout the year in Sullana.

The city experiences its highest humidity in June, reaching 67%. In January, the humidity drops to its lowest level at 51%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year