Weather in Chartres

To ensure your stay in the city of Chartres is as comfortable as possible, check out the latest weather information. Here you will find up-to-date data, forecasts, and useful charts.

The climate in Chartres can be described as temperate, with noticeable seasonal changes throughout the year. The temperature regime is quite mild: there is no exhausting heat in summer or severe frost in winter. Average annual temperatures provide comfortable conditions for visiting the city at various times, although each season certainly has its own unique features.

Summer in Chartres, especially in July and August, is warm and pleasant, with average temperatures around 19.6°C and maximum values reaching a comfortable 24-25°C. Winters, covering the period from December to February, are quite cool, but without extreme cold: the average temperature hovers around 5-6°C. Spring (March-May) and autumn (September-November) are transitional seasons with gradual temperature changes, offering mild weather ideal for walking and exploring the city.

Regarding precipitation, it falls relatively evenly throughout the year in Chartres, with the total monthly amount, according to the provided data, being small, ranging from 1 to 3 mm. The number of days with precipitation fluctuates from 8 in July to 15 in March. This suggests that rains are likely frequent, but light and brief, not creating serious obstacles for travel plans.

Summer months in Chartres, especially July and August, are characterised by the highest temperatures. The average temperature in these months stays at 19.6°C, with daily highs reaching an average of 24.6-24.7°C, and nightly lows dropping to a comfortable 14.5°C. This creates a pleasant daily temperature amplitude of about 10°C, making evenings refreshing after warm days. June also offers warm weather with an average temperature of 17.7°C, a daily maximum of 22.5°C, and a nightly minimum of 12.9°C, serving as a prelude to the summer peak.

The winter period in Chartres is distinguished by coolness, but without severe frosts. January is the coldest month: the average temperature is 4.8°C, minimum nightly temperatures drop to 2.3°C, and daily maximums rise to 7.2°C. Daily temperature fluctuations in winter are less pronounced than in summer, amounting to about 5-7°C. For example, in December (average 5.9°C), the difference between the maximum (8.1°C) and minimum (3.6°C) temperature is about 4.5°C, and in February (average 5.9°C) – about 6.9°C (from 2.5°C to 9.4°C).

Transitional seasons in Chartres demonstrate a smooth change in temperatures. In spring, gradual warming is observed: in March, the average temperature is 7.8°C (from 3.9°C to 11.7°C), in April it is 10.3°C (from 5.6°C to 14.9°C), and in May it reaches 13.4°C (from 8.7°C to 18.1°C). In autumn, the reverse process occurs: September is still quite warm with an average temperature of 16.6°C (from 11.9°C to 21.4°C), in October it decreases to 13.2°C (from 9.5°C to 17.0°C), and November brings coolness with an average temperature of 7.9°C (from 5.1°C to 10.7°C). Daily fluctuations during these periods vary, averaging 6-9°C, which ensures comfortable conditions for visiting the city.

In Chartres, precipitation is distributed relatively evenly throughout the year, judging by the total amount of millimetres, and there is no pronounced rainy season or dry period. The total amount of precipitation per month is extremely small, varying from 1 to 3 mm. However, the frequency of days with precipitation changes noticeably from month to month.

The greatest amount of precipitation, albeit insignificant (3 mm per month), falls in June and October. The driest month both in terms of precipitation amount (only 1 mm) and the number of days with precipitation (on average 8 days) is July. Precipitation is observed most frequently in March, when there are on average 15 days with precipitation, as well as in December (14 days). During these periods, despite the frequency, the total amount of precipitation remains very low (2 mm), indicating a predominantly light nature of precipitation, such as drizzle or brief, weak rains.

In winter, especially in January, February, and December, when average minimum temperatures range from 2.3°C to 3.6°C, precipitation may fall in the form of light snow or wet snow, although their total amount remains small. In spring and autumn, rains prevail, which, as noted, can be frequent but usually very weak. Summer precipitation, for example in June, is also characterised by low volume, with July standing out as the driest month of the year.

When planning a trip to Chartres, it is important to consider the variability of the weather and prepare a wardrobe that will ensure comfort at any time of the year. Winter (December-February) here is quite cool, with average temperatures around 4-6°C, so a warm jacket, sweater, hat, gloves, and scarf will be indispensable. Spring (March-May) and autumn (September-November) are characterised by moderate temperatures that gradually rise or fall, but the number of rainy days remains significant. During these periods, the ideal solution will be layered clothing: a light jacket or raincoat, a fleece sweater that can be removed in warm weather, and, of course, an umbrella or rain cape.

Summer in Chartres (June-August) is warm, with average temperatures around 18-20°C and maximums reaching 22-25°C. At this time, you will need light items: T-shirts, shorts, dresses. However, even in summer, precipitation is possible, though less often than in other seasons, so a light windbreaker or cardigan for the evening will not go amiss. Regardless of the season, comfortable walking shoes are an absolute necessity, as Chartres invites long walks along its historic streets. Also, do not forget sunscreen for the summer months and a compact umbrella, which will be useful throughout the year, given the consistent number of rainy days each month.