Climate Insights for Oltu

The climate in Oltu is cool. The average annual temperature is 7°C and approximately 690mm of precipitation falls per year. Oltu receives a notable amount of rainfall throughout the year, including during its driest month. Oltu 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 January, February, December, when temperatures can drop to -13°C. Oltu experiences heavy snowfall, typically from January through December.

Oltu has a wide annual temperature range, spanning 40°C from the coldest to warmest months. The warmest month is August, when average highs reach 27°C and the mean temperature sits around 19°C. The coldest month is January, when overnight lows fall to -13°C and the daily average is -7°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 8°C shift in average temperatures.

Oltu is a relatively dry area, receiving approximately 690mm of precipitation annually, which averages out to around 57mm per month. The wettest month is May, averaging 126mm of rainfall. April and June also tend to see above-average precipitation. The driest month is February, with just 33mm. That's 93mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Oltu receives heavy snowfall, accumulating around 226cm annually from January through December. The snowiest month is January, with approximately 48cm. Winter travel should account for significant snow cover.

Oltu 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 March, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Oltu, which began on June 21, 2026. Oltu 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 27°C, while the coldest stretch bottoms out in January near -13°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Oltu is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 50mm per month. By contrast, January can be quite cold with temperatures dropping to -13°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Oltu 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.