Climate Overview
The climate in Morgan Hill is temperate. The average annual temperature is 15°C and approximately 594mm of precipitation falls per year. January is the wettest month, receiving around 135mm of rainfall. Morgan Hill 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 February, December, January, when temperatures can drop to 5°C.
Temperature
Temperatures in Morgan Hill vary considerably across the year, with a 24°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 21°C. February is the coolest month, with minimum temperatures around 5°C and an average of 10°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.
Precipitation
Morgan Hill is a relatively dry area, receiving approximately 594mm of precipitation annually, which averages out to around 49mm per month. The wettest month is January, averaging 135mm of rainfall. March and February also tend to see above-average precipitation. The driest month is July, with just 0mm. That's 134mm less than January, 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
Morgan Hill 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 February, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, 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 2km/h between the calmest and windiest months.
Seasons
7 days until Autumn
It is currently summer in Morgan Hill, which began on June 21, 2026. Morgan Hill 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 February near 5°C. Autumn is next, beginning on September 23, 2026 (7 days from now).
Spring
Temperatures range from 6 to 23°C. Precipitation is moderate at around 162mm for the season, averaging 54mm per month. Winds are generally light, averaging 7km/h. Light layers work well as temperatures warm through the season. It is a great time to be outdoors.
Summer
Temperatures range from 12 to 29°C. Precipitation is minimal, with only around 1mm for the entire season. Winds are generally light, averaging 6km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 7 to 28°C. Rainfall is relatively light, with around 87mm over the season and a monthly average of 29mm. Winds are generally light, averaging 6km/h. Layered clothing works best as temperatures gradually cool. Enjoy the crisp air and changing scenery.
Winter
Temperatures range from 5 to 16°C. Rainfall is heavy, totalling around 343mm across the season with a monthly average of 114mm. Winds are generally light, averaging 7km/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 Morgan Hill is during May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 9mm per month. By contrast, February can be quite cold with temperatures dropping to 5°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 Morgan Hill 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.
