Climate Insights for Alamo Heights

The climate in Alamo Heights is warm and mild. The average annual temperature is 21°C and approximately 791mm of precipitation falls per year. Alamo Heights receives a notable amount of rainfall throughout the year, including during its driest month. Alamo Heights is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, December, when temperatures can drop to 6°C.

Temperatures in Alamo Heights vary considerably across the year, with a 30°C difference between the coldest and warmest months. August is the hottest month, with daytime highs reaching 36°C and an average of 30°C. January is the coolest month, with minimum temperatures around 6°C and an average of 11°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Alamo Heights is a relatively dry area, receiving approximately 791mm of precipitation annually, which averages out to around 66mm per month. The wettest month is May, averaging 111mm of rainfall. April and September also tend to see above-average precipitation. The driest month is February, with just 45mm. That's 66mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

Alamo Heights is relatively calm, with an average annual wind speed of 12km/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 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.

It is currently summer in Alamo Heights, which began on June 21, 2026. Alamo Heights 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 36°C, while the coldest stretch bottoms out in January near 6°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Alamo Heights is during March, April, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 65mm per month. By contrast, August can be uncomfortably hot with highs reaching 36°C, while January is the coldest period with lows dropping to 6°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Alamo Heights 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.