Climate Insights for Sparta

The climate in Sparta is temperate. The average annual temperature is 16°C and approximately 1543mm of precipitation falls per year. Sparta receives a notable amount of rainfall throughout the year, including during its driest month. Sparta is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 1°C. Light snow can occur between January and December.

Temperatures in Sparta vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 30°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 1°C and an average of 4°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.

Sparta is a fairly wet location, receiving approximately 1543mm of precipitation annually, which averages out to around 129mm per month. The wettest month is February, averaging 201mm of rainfall. December and April also tend to see above-average precipitation. The driest month is September, with just 78mm. That's 123mm less than February, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 25cm annually. January is the snowiest month with approximately 9cm.

Sparta is relatively calm, with an average annual wind speed of 3km/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 July, 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.

It is currently summer in Sparta, which began on June 21, 2026. Sparta 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 July at around 30°C, while the coldest stretch bottoms out in January near 1°C. Autumn is next, beginning on September 23, 2026 — 72 days from now.

The best time to visit Sparta is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 78mm per month. By contrast, July can be uncomfortably hot with highs reaching 30°C, while January is the coldest period with lows dropping to 1°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Sparta 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.