Climate Overview
The climate in Lake Nacimiento is temperate. The average annual temperature is 16°C and approximately 401mm of precipitation falls per year. January is the wettest month, receiving around 126mm of rainfall. Lake Nacimiento is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: September, August, July. The coldest months are December, February, January, when temperatures can drop to 8°C.
Temperature
Lake Nacimiento sees moderate temperature variation throughout the year, ranging from 8°C to 24°C. September is the warmest month, though highs remain moderate at 24°C with a mean of 19°C. December is the coolest month, with minimum temperatures around 8°C and an average of 12°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between October and November, with a 3°C shift in average temperatures.
Precipitation
Lake Nacimiento is a relatively dry area, receiving approximately 401mm of precipitation annually, which averages out to around 33mm per month. The wettest month is January, averaging 126mm of rainfall. March and February also tend to see above-average precipitation. The driest month is July, with just 0mm. That's 125mm 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
Lake Nacimiento is relatively calm, with an average annual wind speed of 2km/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 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
93 days until Autumn
It is currently summer in Lake Nacimiento, which began on June 21, 2026. Lake Nacimiento 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 September at around 24°C, while the coldest stretch bottoms out in December near 8°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 10 to 19°C. Rainfall is relatively light, with around 115mm over the season and a monthly average of 38mm. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 14 to 23°C. Precipitation is minimal, with only around 1mm for the entire season. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 11 to 24°C. Precipitation is minimal, with only around 45mm for the entire season. Winds are generally light, averaging 2km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 8 to 16°C. Precipitation is moderate at around 240mm for the season, averaging 80mm per month. Winds are generally light, averaging 3km/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 Lake Nacimiento is during May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 4mm per month. By contrast, December can be quite cold with temperatures dropping to 8°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 Lake Nacimiento 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.
