Climate Overview
The climate in Ria-Sirach is temperate. The average annual temperature is 11°C and approximately 1034mm of precipitation falls per year. Ria-Sirach receives a notable amount of rainfall throughout the year, including during its driest month. Ria-Sirach 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, February, December, when temperatures can drop to 0°C. Snowfall occurs from January to December, with around 63cm accumulating over the season.
Temperature
Temperatures in Ria-Sirach vary considerably across the year, with a 24°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 24°C with a mean of 19°C. The coldest month is January, when overnight lows fall to 0°C and the daily average is 3°C. On average, daily temperatures fluctuate by about 9°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
Ria-Sirach is a moderately rainy area, receiving approximately 1034mm of precipitation annually, which averages out to around 86mm per month. The wettest month is June, averaging 123mm of rainfall. May and July also tend to see above-average precipitation. The driest month is December, with just 49mm. That's 74mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 63cm accumulating over the season. January typically sees the most snow at around 20cm.
Wind
Ria-Sirach is mildly breezy, 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 March, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
82 days until Summer
It is currently spring in Ria-Sirach, which began on March 20, 2026. Ria-Sirach 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 24°C, while the coldest stretch bottoms out in January near 0°C. Summer is next, beginning on June 21, 2026 — 82 days from now.
Spring
Temperatures range from 2 to 17°C. Precipitation is moderate at around 288mm for the season, averaging 96mm per month. Winds are generally light, averaging 13km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 12 to 24°C. Rainfall is heavy, totalling around 327mm across the season with a monthly average of 109mm. Winds are generally light, averaging 11km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 3 to 20°C. Precipitation is moderate at around 246mm for the season, averaging 82mm per month. Expect around 5cm of snow accumulation during this period. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 0 to 9°C. Precipitation is moderate at around 174mm for the season, averaging 58mm per month. Expect around 41cm of snow accumulation during this period. Winds are generally light, averaging 12km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Best Time to Visit
The best time to visit Ria-Sirach is during August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 92mm per month. By contrast, July can be uncomfortably hot with highs reaching 24°C, while January is the coldest period with lows dropping to 0°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.
Monthly Climate Data
The table below shows monthly climate averages for Ria-Sirach 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.
