Vannes climate

Vannes Weather in August

NASA POWER reanalysis for the half-degree grid cell around Vannes, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 21°C on August 1 to 21°C on August 31, and lows from 17°C to 16°C. Normal precipitation for the month is 40 mm over about 9 wet days.

August day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Vannes, in °C, with the record for each date.101520253035151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

August at a glance

Average high
21°C
Average low
16°C
Precipitation
40 mm
Reanalysis high
32°CAug 9, 2003
Reanalysis low
12°CAug 26, 1993
Daylight
14 h 58 min to 13 h 26 min
Cloud cover
57%
Humidity
78%
Dew point
15°C
Wind
18.0 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
Aug 121°C17°C27°C 200413°C 201528%
Aug 221°C17°C28°C 201814°C 199829%
Aug 321°C16°C28°C 201814°C 200228%
Aug 421°C16°C29°C 200314°C 202028%
Aug 521°C17°C28°C 201814°C 199829%
Aug 621°C16°C28°C 200313°C 199328%
Aug 721°C16°C31°C 200314°C 201728%
Aug 821°C16°C30°C 200314°C 199628%
Aug 921°C16°C32°C 200314°C 200729%
Aug 1021°C16°C30°C 200313°C 201129%
Aug 1121°C16°C26°C 202014°C 200130%
Aug 1221°C16°C26°C 201515°C 201631%
Aug 1321°C16°C29°C 200313°C 199331%
Aug 1421°C16°C26°C 199114°C 201029%
Aug 1521°C16°C28°C 199713°C 201130%
Aug 1621°C16°C28°C 201613°C 201529%
Aug 1721°C16°C26°C 200513°C 201529%
Aug 1821°C16°C26°C 199314°C 201530%
Aug 1921°C16°C25°C 199513°C 199129%
Aug 2021°C16°C26°C 199513°C 201429%
Aug 2121°C16°C26°C 199314°C 200229%
Aug 2221°C16°C27°C 201314°C 200828%
Aug 2321°C16°C26°C 200314°C 200827%
Aug 2421°C16°C28°C 201614°C 199327%
Aug 2521°C16°C26°C 199112°C 199325%
Aug 2621°C16°C27°C 201912°C 199324%
Aug 2721°C16°C28°C 201714°C 199323%
Aug 2821°C16°C27°C 201712°C 199823%
Aug 2921°C16°C28°C 201712°C 199323%
Aug 3021°C16°C26°C 201513°C 199322%
Aug 3121°C16°C22°C 200913°C 201022%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Vannes, in percent.0102030401102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+2).

August 1
sunrise 6:48 AM, sunset 9:46 PM
August 31
sunrise 7:28 AM, sunset 8:54 PM

Every day of August: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.