During the week of 23 June 2025 - 29 June 2025, temperatures averaged at 29 °C (84 °F) during the day and dropped to 16 °C (61 °F) at night. These temperatures are above the long-time average for Chartres, being 23 °C (73 °F) for daily temperatures and 12 °C (54 °F) for night temperatures. The average temperatures observed during different times of day (based on local time) were as below: 7am 17 °C (63 °F), 10am 21 °C (70 °F), 1pm 25 °C (77 °F), 4pm 28 °C (82 °F), 7pm 28 °C (82 °F), 10pm 23 °C (73 °F).

There were 5 days without rain, 1 day with light rain and 1 day with moderate rain during this week. During the whole week, total of 24 mm (0.94 in) of precipitation was observed, which is above the long term average for Chartres, which is 12 mm (0.47 in). On average, the cloud coverage during daylight hours (from dawn to dusk) was 43 %.

The wind's speed averaged 2.5 m/s. The air pressure varied between 1006 hpa and 1026 hpa. The air in Chartres had an average humidity of 70 %.

On average, there were 7 hours clear skies, 5 hours partially overcast skies, 4 hours overcast skies and 1 hour rainy weather during the daytime (from dawn to dusk). Average time of sunrise was 05:53, average time of sunset was 21:59.

Weather overview

Chartres (France) in general has a mild climate. The day temperatures range from 7 °C (44 °F) in January to 25 °C (76 °F) in July. The least rainy month in Chartres is August with its 7 days of rain, the rainiest month is December, when it rains 11 days. The highest night temperatures could be experienced in July with 13 °C (56 °F), the lowest in February with 1 °C (34 °F).

January weather

The day temperature is on its minimum, the value of this measure is 7 °C (44 °F) in Chartres, while the descent of the night temperature can be observed, with its value being 1 °C (34 °F). The beginning of the descent of the rainfall amount could be noticed, its value is 48 mm (1.90 in). The wind speed is on its maximum, with its value being 5. The maximum of the humidity can be noticed in this month.

February weather

The day temperature starts to rise, with its value of 8 °C (46 °F) in Chartres, while the night temperature is on its minimum, its value is 1 °C (34 °F). The beginning of the descent of the number of rainy days could be noticed, its value is 10 days, while the rainfall amount is on its minimum, its value is 41 mm (1.61 in). The beginning of the rise of the number of sun hours (without clouds) could be noticed, with its value of 3 hours.

March weather

The rise of the day temperature can be observed, with its value of 12 °C (54 °F) in Chartres, while the night temperature rise's start could be observed, with its value being 3 °C (37 °F). The number of sun hours (without clouds) rises similarly to the previous month, with its value being 4 hours.

April weather

The day temperature continues to rise, with its value being 15 °C (59 °F) in Chartres, and the night temperature rises similarly to the previous month as well, its value is 5 °C (41 °F). The number of sun hours (without clouds) continues to rise, its value is 6 hours.

May weather

The day temperature continues to rise, with its value being 19 °C (66 °F) in Chartres, and the rise of the night temperature can be observed as well, with its value of 8 °C (47 °F). The number of rainy days starts to rise, with its value being 11 days, and the beginning of the rise of the rainfall amount could be noticed as well in May. The tourist season is at its beginning. The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 6 hours.

June weather

The day temperature rises similarly to the previous month, its value is 22 °C (72 °F) in Chartres, and the rise of the night temperature can be observed as well, its value is 11 °C (52 °F). The tourist season continues this month. The rainfall amount starts to descent, the value of this measure is 48 mm (1.90 in), and the number of rainy days starts to descent too, its value is 9 days. The maximum of the day length can be noticed in June.

July weather

There is pending tourist season this month in Chartres. The maximum of the day temperature is observable, and the night temperature reaches its maximum too, its value is 13 °C (56 °F). The number of rainy days descents similarly to the previous month, its value is 8 days, while the rainfall amount starts to rise. The maximum of the number of sun hours (without clouds) can be noticed, the value of this measure is 8 hours.

August weather

The ongoing tourist season is noticeable in Chartres. The rainfall amount starts to descent, its value is 43 mm (1.70 in), while the number of rainy days is on its minimum. The beginning of the descent of the number of sun hours (without clouds) could be noticed in August. The minimum of the wind speed can be noticed in this month.

September weather

The day temperature descent's start could be observed, the value of this measure is 21 °C (69 °F) in Chartres, and the night temperature descent's start could be observed too, with its value of 11 °C (51 °F). The number of rainy days rise's start could be observed, with its value of 8 days. The tourist season is taking place this month. The descent of the number of sun hours (without clouds) can be observed.

October weather

The number of rainy days rises similarly to the previous month, with its value of 10 days in Chartres, while the rainfall amount reaches its maximum in this month. The day temperature descents similarly to the previous month, its value is 16 °C (60 °F), and the night temperature descents similarly to the previous month too, with its value being 8 °C (46 °F). The number of sun hours (without clouds) descents similarly to the previous month, its value is 4 hours.

November weather

The rainfall amount starts to descent in November in Chartres. The night temperature continues to descent, its value is 4 °C (39 °F), and the descent of the day temperature can be observed as well, the value of this measure is 10 °C (50 °F). The number of sun hours (without clouds) continues to descent, with its value of 2 hours.

December weather

The descent of the day temperature can be observed, the value of this measure is 7 °C (44 °F) in Chartres, and the night temperature continues to descent too, with its value being 2 °C (35 °F). The beginning of the rise of the rainfall amount could be noticed, the value of this measure is 56 mm (2.20 in), while the maximum of the number of rainy days can be noticed in this month. The minimum of the number of sun hours (without clouds) can be noticed, with its value being 2 hours. The day length is on its minimum, with its value being 8 hours.

How windy is Chartres in March?

In March in Chartres, there will be an average wind scale of 5.

Is there a dry season in April in Chartres?

No, April is not a dry month in Chartres, expect rain approximately 10 days in a month.

What is the night temperature in May in Chartres?

The average night temperature in May in Chartres is 8 °C (47 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.

Is June a good month to visit Chartres?

There are good conditions for visiting in Chartres in June. You can expect just 9 days of rain during the month, taking an umbrella is not necessary. There are some people, who may feel a slight chill at 22 °C (72 °F), but others will feel perfectly fine. The temperature of 11 °C (52 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.

What temperature can I expect during the day in Chartres in July?

In Chartres in July, the average daily temperatures will be 25 °C (76 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.

Is August part of the wet season in Chartres?

No, there is no wet season in August in Chartres - you can expect 7 days of rain during the month.

How many rainy days can I expect in Chartres in September?

There are 8 days, which are rainy in September in Chartres, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.9 days of the week, or in general - 27 % days.

How many sunny hours can I expect in October in Chartres?

There is an average length of sunshine of 4 hours per day in October in Chartres.