Climate Overview
The climate in Sinanju is temperate. The average annual temperature is 11°C and approximately 1188mm of precipitation falls per year. August is the wettest month, receiving around 265mm of rainfall. Sinanju is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, December, February, when temperatures can drop to -10°C. Light snow can occur between January and December.
Temperature
Sinanju has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 26°C. The coldest month is January, when overnight lows fall to -10°C and the daily average is -5°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 8°C shift in average temperatures.
Precipitation
Sinanju is a moderately rainy area, receiving approximately 1188mm of precipitation annually, which averages out to around 99mm per month. The wettest month is August, averaging 265mm of rainfall. July and June also tend to see above-average precipitation. The driest month is January, with just 15mm. That's 250mm less than August, 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. Light snowfall can occur between January and December, totalling around 34cm annually. December is the snowiest month with approximately 11cm.
Wind
Sinanju is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 9km/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
7 days until Autumn
It is currently summer in Sinanju, which began on June 21, 2026. Sinanju 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 -10°C. Autumn is next, beginning on September 23, 2026 (7 days from now).
Spring
Temperatures range from 0 to 22°C. Precipitation is moderate at around 207mm for the season, averaging 69mm per month. Winds are generally light, averaging 12km/h. Light layers work well as temperatures warm through the season. It is a great time to be outdoors.
Summer
Temperatures range from 18 to 29°C. Rainfall is heavy, totalling around 687mm across the season with a monthly average of 229mm. Winds are generally light, averaging 10km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 0 to 26°C. Precipitation is moderate at around 234mm for the season, averaging 78mm per month. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -10 to 3°C. Rainfall is relatively light, with around 60mm over the season and a monthly average of 20mm. Expect around 27cm of snow accumulation during this period. Winds are generally light, averaging 11km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Sinanju 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.
