Weather in Montpellier in August

Prime time. If you get to pick your dates, August is the one. Highs average 29.6 °C, lows 19.4 °C, and rain falls on 5 days — nothing in the month is working against you.

August ranks 5 of 12 in Montpellier: past the worst of the year but short of June, which is the month to book if the dates are open.

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 29.6 °C days and 19.4 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 13 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest August day reached 38.1 °C and the coldest night fell to 14 °C, and the wettest single day dropped 29 mm — roughly 116% of the month's rain in one day.

August is moderately variable: 5 mm in the driest year against 74 mm in the wettest, around an average of 25 mm. Roughly two Augusts in three land near that average, and the third does something else entirely.

Wind is light at 10.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 59%.

How August sits in the year

Temperatures hold steady either side: 29.9 °C in July, 29.6 here, 25.5 in September. Nothing about the timing within the month matters much.

Daylight in August

14 hours of daylight, losing 1.3 hours across the month. That is between Montpellier's extremes of 15.4 and 9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 22.3 °C in August — comfortable for a proper swim. This is the warmest the water gets all year.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, April is the trade worth considering — 11 points weaker on weather, and materially quieter.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Montpellier versus nearby

If Montpellier is one option among several, the nearby comparison is worth making. Marseille is the weaker option in August — 3 °C warmer, 1 day less rain. Toulouse is the weaker option in August — within a degree on temperature, 5 days more rain.

So: August works, with June the better month by 9 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Montpellier

See all twelve months in Montpellier, or where else to go in August.