Climate Overview
The climate in Altamira is hot. The average annual temperature is 25°C and approximately 790mm of precipitation falls per year. September is the wettest month, receiving around 151mm of rainfall. Altamira is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, June, July. The coldest months are January, February, December, when temperatures can drop to 17°C.
Temperature
Altamira sees moderate temperature variation throughout the year, ranging from 17°C to 32°C. The warmest month is August, when average highs reach 32°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 17°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 3°C shift in average temperatures.
Precipitation
Altamira is a relatively dry area, receiving approximately 790mm of precipitation annually, which averages out to around 66mm per month. The wettest month is September, averaging 151mm of rainfall. June and July also tend to see above-average precipitation. The driest month is February, with just 12mm. That's 139mm 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.
Wind
Altamira is mildly breezy, with an average annual wind speed of 19km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in December, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Altamira, which began on March 20, 2026. Altamira 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 August at around 32°C, while the coldest stretch bottoms out in January near 17°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 20 to 31°C. Rainfall is relatively light, with around 104mm over the season and a monthly average of 35mm. Winds are moderate at around 22km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 26 to 32°C. Rainfall is heavy, totalling around 333mm across the season with a monthly average of 111mm. Winds are moderate at around 19km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 21 to 31°C. Precipitation is moderate at around 285mm for the season, averaging 95mm per month. Winds are moderate at around 18km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 17 to 25°C. Rainfall is relatively light, with around 67mm over the season and a monthly average of 22mm. Winds are moderate at around 19km/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 Altamira is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 28mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 32°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for Altamira 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.
