Climate Overview
The climate in San Mariano is hot. The average annual temperature is 26°C and approximately 2074mm of precipitation falls per year. San Mariano receives a notable amount of rainfall throughout the year, including during its driest month. San Mariano is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, May, July. The coldest months are February, January, March, when temperatures can drop to 21°C.
Temperature
San Mariano sees moderate temperature variation throughout the year, ranging from 21°C to 34°C. The warmest month is June, when average highs reach 34°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 21°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between March and April, with a 2°C shift in average temperatures.
Precipitation
San Mariano is a very wet location, receiving approximately 2074mm of precipitation annually, which averages out to around 173mm per month. The wettest month is July, averaging 285mm of rainfall. October and December also tend to see above-average precipitation. The driest month is April, with just 47mm. That's 237mm less than July, 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.
Wind
San Mariano is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
7 days until Autumn
It is currently summer in San Mariano, which began on June 21, 2026. San Mariano 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 June at around 34°C, while the coldest stretch bottoms out in February near 21°C. Autumn is next, beginning on September 23, 2026 (7 days from now).
Spring
Temperatures range from 22 to 34°C. Precipitation is moderate at around 235mm for the season, averaging 78mm per month. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 34°C. Rainfall is heavy, totalling around 672mm across the season with a monthly average of 224mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 699mm across the season with a monthly average of 233mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 27°C. Rainfall is heavy, totalling around 468mm across the season with a monthly average of 156mm. Winds are generally light, averaging 6km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit San Mariano is during February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 90mm per month. By contrast, June can be uncomfortably hot with temperatures reaching 34°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.
Monthly Climate Data
The table below shows monthly climate averages for San Mariano 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.
