Belfast climate

Belfast Weather in August

NOAA 1991-2020 normals for Belfast, 3.7 km from Belfast

Average highs run from 78°F on August 1 to 74°F on August 31, and lows from 57°F to 53°F. Normal precipitation for the month is 3.06 in over about 8 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Belfast, in °F, with the record for each date.405060708090151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
76°F
Average low
56°F
Precipitation
3.06 in
Record high
89°FAug 27, 2018
Record low
45°FAug 27, 1989
Chance of a freeze
0%
Days of 90°F or more
0.7
Daylight
14 h 38 min to 13 h 16 min
Cloud cover
57%
Humidity
78%
Dew point
59°F
Wind
4.7 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 178°F57°F84°F 201752°F 200027%0%
Aug 278°F57°F88°F 200653°F 199227%0%
Aug 378°F57°F83°F 201852°F 201627%0%
Aug 478°F57°F79°F 199855°F 200527%0%
Aug 578°F57°F81°F 201854°F 200027%0%
Aug 677°F57°F87°F 201852°F 201327%0%
Aug 777°F57°F87°F 201850°F 199426%0%
Aug 877°F57°F83°F 199550°F 199526%0%
Aug 977°F57°F82°F 201849°F 198926%0%
Aug 1077°F57°F81°F 201852°F 198926%0%
Aug 1177°F56°F84°F 201652°F 199426%0%
Aug 1277°F56°F85°F 201650°F 199626%0%
Aug 1377°F56°F81°F 199547°F 199226%0%
Aug 1477°F56°F85°F 201650°F 199626%0%
Aug 1577°F56°F82°F 201651°F 199725%0%
Aug 1677°F56°F84°F 200353°F 201725%0%
Aug 1777°F56°F88°F 200250°F 201725%0%
Aug 1876°F56°F79°F 200951°F 200025%0%
Aug 1976°F55°F82°F 200250°F 199525%0%
Aug 2076°F55°F80°F 201747°F 200725%0%
Aug 2176°F55°F79°F 201747°F 199024%0%
Aug 2276°F55°F81°F 199248°F 199024%0%
Aug 2376°F55°F81°F 200950°F 199324%0%
Aug 2476°F54°F79°F 201650°F 200324%0%
Aug 2575°F54°F76°F 201646°F 198924%0%
Aug 2675°F54°F81°F 201647°F 201724%0%
Aug 2775°F54°F89°F 201845°F 198924%0%
Aug 2875°F54°F84°F 201846°F 201724%0%
Aug 2975°F53°F88°F 201846°F 201723%0%
Aug 3075°F53°F87°F 201048°F 200123%0%
Aug 3174°F53°F87°F 201046°F 201723%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Belfast, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 5:23 AM, sunset 8:01 PM
August 31
sunrise 5:58 AM, sunset 7:14 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00170480 (Belfast), public domain. Records: NOAA GHCN-Daily, station USC00176881, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.