Galway climate

Galway Weather in August

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

Average highs run from 20°C on August 1 to 18°C on August 31, and lows from 12°C to 11°C. Normal precipitation for the month is 102 mm over about 19 wet days.

August day by day

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

Normal daily high and low temperature at Galway, in °C, with the record for each date.51015202530151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

August at a glance

Average high
19°C
Average low
11°C
Precipitation
102 mm
Reanalysis high
29°CAug 7, 2003
Reanalysis low
6°CAug 25, 2018
Daylight
15 h 38 min to 13 h 44 min
Cloud cover
78%
Humidity
83%
Dew point
12°C
Wind
17.6 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 120°C12°C26°C 19958°C 201566%
Aug 220°C12°C28°C 19958°C 201165%
Aug 320°C12°C27°C 19959°C 201164%
Aug 420°C12°C28°C 19958°C 199364%
Aug 520°C12°C29°C 20037°C 199364%
Aug 620°C12°C25°C 19958°C 201564%
Aug 720°C12°C29°C 20038°C 201564%
Aug 820°C12°C29°C 20038°C 201762%
Aug 920°C12°C24°C 20038°C 200262%
Aug 1019°C12°C26°C 19957°C 200262%
Aug 1119°C12°C24°C 20208°C 201561%
Aug 1219°C12°C25°C 20208°C 201962%
Aug 1319°C12°C24°C 20208°C 201562%
Aug 1419°C11°C24°C 19957°C 199362%
Aug 1519°C11°C25°C 19957°C 199364%
Aug 1619°C11°C26°C 19958°C 199365%
Aug 1719°C11°C28°C 19957°C 201166%
Aug 1819°C11°C28°C 19958°C 199166%
Aug 1919°C11°C28°C 19957°C 201466%
Aug 2019°C11°C27°C 19957°C 201464%
Aug 2119°C11°C25°C 19958°C 201463%
Aug 2219°C11°C24°C 19958°C 201461%
Aug 2319°C11°C24°C 20038°C 201460%
Aug 2419°C11°C25°C 20037°C 201558%
Aug 2519°C11°C23°C 20036°C 201857%
Aug 2619°C11°C22°C 20027°C 201056%
Aug 2719°C11°C23°C 20027°C 199855%
Aug 2819°C11°C25°C 19918°C 201853%
Aug 2918°C11°C26°C 19917°C 201053%
Aug 3018°C11°C24°C 19916°C 201052%
Aug 3118°C11°C25°C 19918°C 202051%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Galway, in percent.0204060801102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+1).

August 1
sunrise 5:53 AM, sunset 9:31 PM
August 31
sunrise 6:44 AM, sunset 8:28 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.