Strasbourg, the seat of the European Parliament and the capital of Alsace, has a semi-continental climate, with cold winters and relatively warm summers. In fact, because of its eastern position, the climate, more than "French", is "German", that is, that of the Rhine Valley, to which it belongs.
The daily average temperature ranges from 1 °C (34 °F) in January to 19.5 °C (67 °F) in July. Here are the average temperatures.

Precipitation amounts to 660 millimeters (26 inches) per year, so it's not plentiful, but it's well distributed over the seasons because Atlantic depressions can affect this area all year round. However, the rains are more abundant between May and September because of afternoon thunderstorms, which can erupt in the warm season.
Here is the average precipitation.

Winter, from December to February, is cold and gray, with average temperatures near freezing (0 °C or 32 °F). However, there are different weather situations: when the currents come from the Atlantic Ocean, temperatures are fairly mild, and highs can reach or exceed 10 °C (50 °F), in addition, it can rain and there can be a strong wind; when the atmosphere is more stable and the wind is weak, the temperatures are close to the average, and there can be fog and low clouds; but when cold winds blow from Eastern Europe, the temperature drops to many degrees below freezing. For example, the temperature reached -15 °C (5 °F) in February 2012, -18 °C (0 °F) in December 2010, -20 °C (-4 °F) in February 1986, -19 °C (-2 °F) in January 1987, and -17 °C (1 °F) in January 1985, but back in January 1942, it plunged to -24 °C (-11 °F).
Snowfalls are quite frequent, though generally not abundant.

Spring, from March to May, is cool, unstable and moderately rainy. The season is initially cold, with possible snow and frost in March, and then gradually becomes milder, but with some chance of cold periods still in April. In May, it can get cold, especially in the first half of the month, with lows close to freezing, but at other times the first warm days can occur, especially in the second half of the month, with the first afternoon thunderstorms.

In summer, from June to August, there are variable or sunny days, with pleasant temperatures, and some hot days, with highs equal to or above 30 °C (86 °F), and sometimes even up to 35/37 °C (95/99 °F). On sunny days, in the afternoon, thunderstorms can erupt. Sometimes there are also rainy and cool days. However, when Atlantic fronts pass, there can also be cool and rainy days.

Autumn, from September to November, is initially mild and not too rainy, and gradually becomes more gray, cold and rainy. In November, generally the first snowfalls and night frosts occur, but already in October it can sometimes be cold.



The amount of sunshine in Strasbourg is scarce in winter, when the days are usually dull and cloudy, while it is acceptable from May to August, when the sun shines for 7 hours per day on average.

Best Time

The best time to visit Strasbourg is from mid-May to late September. In this period, the weather is generally pleasant, however, there can be some afternoon thunderstorms as well as some cool and rainy days, and even some hot days (especially from mid-June to mid-August).