Climate Insights for Poway

The climate in Poway is temperate. The average annual temperature is 17°C and approximately 447mm of precipitation falls per year. March is the wettest month, receiving around 89mm of rainfall. Poway is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 7°C.

Temperatures in Poway vary considerably across the year, with a 22°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 23°C. January is the coolest month, with minimum temperatures around 7°C and an average of 12°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 4°C shift in average temperatures.

Poway is a relatively dry area, receiving approximately 447mm of precipitation annually, which averages out to around 37mm per month. The wettest month is March, averaging 89mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 2mm. That's 88mm less than March, 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.

Poway is relatively calm, with an average annual wind speed of 7km/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 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 6km/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 Poway, which began on June 21, 2026. Poway 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 29°C, while the coldest stretch bottoms out in January near 7°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Poway is during April, May, June, July, August, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 16mm per month. By contrast, January can be quite cold with temperatures dropping to 7°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Poway 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.