The best times to visit Istres for ideal weather are

April 9th to July 1st

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Istres Travel Info

Weather in Istres


Average temperatures in Istres vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 55th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Istres, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 87.7°F (30.9°C) with temperatures rarely dropping below 66.7°F (19.3°C) at night.

Istres Temperatures (Fahrenheit)


Istres Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Istres Perceived Temperature (F)


Istres Perceived Temperature (C)



Average Istres Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 53.1 44.8 37.1
Feb 54.1 45 36.7
Mar 61.2 51.3 42
Apr 68.2 57.9 47.7
May 74.6 64.3 54.1
Jun 82.5 71.7 61.1
Jul 87.2 76.1 65.8
Aug 86.5 75.3 65.1
Sep 79.1 68.5 58.6
Oct 70.8 61.2 52.6
Nov 61 52.2 44.3
Dec 54.3 46.3 38.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 11.7 7.1 2.8
Feb 12.3 7.2 2.6
Mar 16.2 10.7 5.6
Apr 20.1 14.4 8.7
May 23.7 17.9 12.3
Jun 28.1 22.1 16.2
Jul 30.7 24.5 18.8
Aug 30.3 24.1 18.4
Sep 26.2 20.3 14.8
Oct 21.6 16.2 11.4
Nov 16.1 11.2 6.8
Dec 12.4 7.9 3.6



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Istres are July, August, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid June. For example, on the week of June 18th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late November to early December with an average of 2 days of significant precipitation the week of November 26th.

When can you find snow in Istres? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Istres.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Istres (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 13% 0 2.2
Feb 16% 0 1.7
Mar 12% 0 1.6
Apr 14% 0 2.2
May 11% 0 1.6
Jun 5% 0 0.8
Jul 3% 0 0.5
Aug 4% 0 0.7
Sep 6% 0 1.1
Oct 9% 0 2
Nov 17% 0 2.7
Dec 9% 0 1.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 13 0 5.6
Feb 16 0 4.3
Mar 12 0 4.1
Apr 14 0 5.6
May 11 0 4.1
Jun 5 0 2
Jul 3 0 1.3
Aug 4 0 1.8
Sep 6 0 2.8
Oct 9 0 5.1
Nov 17 0 6.9
Dec 9 0 4.8


Humidity and Wind

Istres has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is July (44.4% relative humidity), and the most humid month is December (66%).

Wind in Istres is usually moderate. The windiest month is March, followed by February and May. March’s average wind speed of around 11.2 knots (12.9 MPH or 20.8 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early March where average top sustained speeds reach 21.6 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Istres.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 10.4 Gentle breeze 18.2 Strong breeze
Feb 11.2 Significant breeze 19.8 Strong breeze
Mar 11.2 Significant breeze 19.7 Strong breeze
Apr 9.6 Gentle breeze 17.9 Strong breeze
May 10.5 Gentle breeze 18.9 Strong breeze
Jun 10 Gentle breeze 18 Strong breeze
Jul 10.4 Gentle breeze 18.3 Strong breeze
Aug 9.1 Gentle breeze 16.7 Significant breeze
Sep 9.6 Gentle breeze 17 Strong breeze
Oct 9.8 Gentle breeze 17.2 Strong breeze
Nov 10.1 Gentle breeze 17.3 Strong breeze
Dec 10.4 Gentle breeze 18.3 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 65%
Feb 58.7%
Mar 54.1%
Apr 56.5%
May 51.9%
Jun 48.5%
Jul 44.4%
Aug 47.6%
Sep 53.2%
Oct 61.6%
Nov 65.9%
Dec 66%


Is it Safe to Travel to Istres?

Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for France; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 24, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Istres, France is June, followed by July and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Istres in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 23.8 in November means 23.8% of the tourists vs. June.



Overall Istres Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 77.8°F (25.4°C) and 58.2°F (14.6°C) with warmer temperatures in the later months. Rain is rare with 3 to 4 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 1 to 2 days of precipitation per month. June – August is the busiest season for tourism in Istres, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 82.1°F (27.8°C) and 55.1°F (12.8°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 2 to 5 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Istres to be enjoyable for warm weather travelers. The average high during this season is between 59.6°F (15.3°C) and 50.7°F (10.4°C). On average, it rains or snows a smalll amount: 3 to 4 times per month. These times of year are fairly slow with tourists.


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