Climate Insights for Petatlán

The climate in Petatlán is hot. The average annual temperature is 26°C and approximately 1335mm of precipitation falls per year. September is the wettest month, receiving around 344mm of rainfall. Petatlán is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, May, August. The coldest months are February, March, January, when temperatures can drop to 20°C.

Petatlán has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is July, when average highs reach 30°C and the mean temperature sits around 27°C. February is the coolest month, with minimum temperatures around 20°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.

Petatlán is a fairly wet location, receiving approximately 1335mm of precipitation annually, which averages out to around 111mm per month. The wettest month is September, averaging 344mm of rainfall. August and June also tend to see above-average precipitation. The driest month is April, with just 0mm. That's 344mm less than September, 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.

Petatlán is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is May, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Petatlán, which began on June 21, 2026. Petatlán 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 July at around 30°C, while the coldest stretch bottoms out in February near 20°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

The best time to visit Petatlán is during January, February, March and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 7mm per month. By contrast, July can be uncomfortably hot with temperatures reaching 30°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Petatlán 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. 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.