Climate Overview
The climate in Alba Iulia is cool. The average annual temperature is 10°C and approximately 923mm of precipitation falls per year. Alba Iulia receives a notable amount of rainfall throughout the year, including during its driest month. Alba Iulia 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 -5°C. Snowfall occurs from January to December, with around 103cm accumulating over the season.
Temperature
Temperatures in Alba Iulia vary considerably across the year, with a 31°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 20°C. The coldest month is January, when overnight lows fall to -5°C and the daily average is -2°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.
Precipitation
Alba Iulia is a moderately rainy area, receiving approximately 923mm of precipitation annually, which averages out to around 77mm per month. The wettest month is June, averaging 148mm of rainfall. July and May also tend to see above-average precipitation. The driest month is January, with just 45mm. That's 103mm 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 103cm accumulating over the season. January typically sees the most snow at around 32cm.
Wind
Alba Iulia 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 August, with average winds dropping to 1km/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
92 days until Autumn
It is currently summer in Alba Iulia, which began on June 21, 2026. Alba Iulia 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 26°C, while the coldest stretch bottoms out in January near -5°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.
Spring
Temperatures range from 1 to 19°C. Precipitation is moderate at around 240mm for the season, averaging 80mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 14 to 26°C. Rainfall is heavy, totalling around 374mm across the season with a monthly average of 125mm. Winds are generally light, averaging 1km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 2 to 22°C. Precipitation is moderate at around 161mm for the season, averaging 54mm per month. Expect around 7cm of snow accumulation during this period. 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 -5 to 6°C. Rainfall is relatively light, with around 148mm over the season and a monthly average of 49mm. Expect around 78cm of snow accumulation during this period. Winds are generally light, averaging 2km/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 Alba Iulia is during August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 70mm per month. By contrast, January can be quite cold with temperatures dropping to -5°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 Alba Iulia 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.
