Weather in Graz

Planning your day in Graz? Here you will find the most up-to-date weather information, including detailed forecasts and clear charts to help you prepare for whatever nature has in store.

The climate of Graz, located in Austria, can be characterized as moderate continental. The city experiences four distinct seasons, each with its own weather features, making it an attractive destination to visit at various times of the year.

Summer, from June to August, in Graz is usually warm and pleasant, with average temperatures around 18-19°C and maximums reaching 24°C. Winters, from December to February, are cool, with average temperatures around 0°C and overnight frosts. Spring and autumn are transitional seasons with mild and gradually changing weather. Precipitation is distributed relatively evenly throughout the year; however, from May to August, a higher number of days with precipitation is observed, although the total volume of moisture remains moderate.

Overall, the weather in Graz offers variety, allowing you to enjoy both sunny summer days and the charm of a snowy winter. Travellers should consider seasonal temperature fluctuations and the likelihood of precipitation when planning a trip to choose the most comfortable time for themselves.

The temperature regime in Graz demonstrates distinct seasonal fluctuations typical of a moderate continental climate. The coldest months are January, with an average temperature of -0.4°C (minimum -4.1°C, maximum 3.3°C), and December, where the average temperature is 0.1°C (minimum -3.2°C, maximum 3.5°C). The warmest months are considered July and August, both with an average temperature of 18.9°C. In July, the maximum temperature can reach 24.2°C, and in August – 24.0°C, while nightly lows hold at 13.6°C and 13.7°C respectively.

The summer months in Graz, from June to August, are characterized by pleasantly warm weather. The average daily temperature in June is 17.6°C, rising to nearly 19°C in July and August. Daytime highs during this period range from 22.8°C to 24.2°C, creating comfortable conditions for walks and active leisure. Nights also remain warm, with temperatures rarely dropping below 12-13°C. The winter period, conversely, brings coolness. From December to February, average temperatures hover around zero degrees. At night, frosts frequently occur, with minimum values reaching -3°C and -4°C in December and January. During the day, the temperature usually stays just above freezing, rarely rising above 3-6°C.

The transitional seasons, spring and autumn, are distinguished by gradual temperature changes. In March, the average temperature is 4.2°C, and by May it rises to 12.0°C. In autumn, the reverse trend is observed: September is still quite warm (14.1°C), but by November the average temperature drops to 4.2°C. The difference between day and night temperatures is noticeable throughout the year but is especially pronounced in the summer and spring-autumn months, when daytime warming can be significant while nights bring palpable coolness. For example, in April, the difference between the average maximum (13.9°C) and average minimum (2.8°C) temperature is more than 10 degrees.

In Graz, precipitation is distributed throughout the year with some pronounced peaks indicating wetter periods. Although there is no distinct rainy season or drought, there is a tendency for an increase in the amount of rainfall and rainy days in late spring and summer. Overall, the city receives a moderate amount of precipitation, but the frequency of its occurrence can vary.

The wettest period in Graz can be considered the months from May to September. May stands out as the rainiest month in terms of days with precipitation – on average 19 days, with about 4 mm of precipitation falling. July, August, and September are also characterized by a relatively high volume of precipitation (4 mm each) and a significant number of rainy days (16-17 days in July and August, 12 days in September). Summer precipitation can take the form of heavy showers alternating with sunny periods.

The winter months, from December to February, bring less precipitation in millimetres, but the number of days with precipitation remains noticeable. In January, December, March, October, and November, about 2 mm of precipitation falls, while the number of days with precipitation ranges from 10 to 12. Given the low temperatures in the winter period, especially in January (average temperature -0.4°C) and December (average temperature 0.1°C), precipitation at this time often falls as snow or wet snow. The driest month both in terms of precipitation volume (1 mm) and the number of days with it (7 days) is February.

Thus, when planning a trip to Graz, one should expect more frequent precipitation from May to August, with May being the month with the highest probability of rain. In winter, precipitation is less abundant but may fall as snow, creating a winter atmosphere. February offers the lowest probability of encountering precipitation.

When planning a trip to Graz, it is important to consider its four distinct seasons, each of which dictates its own rules when packing your suitcase. Regardless of the time of year, comfortable walking shoes will be your best companion, as Graz invites long walks through its charming streets. The principle of layering clothes is an excellent strategy, especially for spring and autumn when the weather can be changeable throughout the day.

For the warm period, covering late spring, summer, and early autumn (approximately from May to September), when average temperatures range from 12°C to 19°C and maximums reach 24°C, pack light clothing: t-shirts, shorts, skirts, and dresses. Don't forget sunscreen, a hat, and sunglasses for protection from the summer sun. Considering that in the summer months (especially from May to August) there can be up to 16-19 days with precipitation, a light waterproof jacket or an umbrella will be very handy. Evenings can be cooler, so bring a light sweater or cardigan.

In the cool and cold months, from October to April, your wardrobe should be significantly warmer. In winter (December-February), the average temperature stays around 0°C, with night frosts down to -4°C, so a warm jacket or coat, sweaters, warm trousers, as well as a hat, scarf, and gloves are necessary. Since precipitation in winter (about 10-12 days per month) often falls as snow, warm waterproof footwear will ensure comfort. In transitional seasons, such as March-April and October-November, when the temperature changes gradually, layered clothing including fleece tops, windbreakers, and insulated vests will help you adapt to any weather conditions.