August weather in Portsmouth, VA
The average temperature in Portsmouth in August is 78.9°F (71.5°F–86.3°F). Average precipitation: 5.30 inches.
August is a summer month in Portsmouth, and is warmer than the annual average of 61.4°F. Daily temperatures swing about 14.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 25m. For travel, August is a wet month.
Avg High
86.3°F
Avg Low
71.5°F
Precipitation
5.30 in
Daylight
13h 25m
August records in Portsmouth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1980) | -52.8°F (2022) | 2.23 in (1996) |
| August 2 | 100.9°F (2006) | -74.7°F (2022) | 1.64 in (2016) |
| August 3 | 100.9°F (2006) | -78.9°F (2022) | 2.71 in (1973) |
| August 4 | 100.0°F (1980) | -73.8°F (2022) | 2.18 in (1948) |
| August 5 | 99.0°F (1981) | -73.8°F (2022) | 2.93 in (1961) |
| August 6 | 98.1°F (1977) | -78.9°F (2022) | 2.67 in (1974) |
| August 7 | 100.0°F (1977) | -77.8°F (2022) | 2.02 in (1991) |
| August 8 | 100.9°F (2007) | 64.9°F (1950) | 1.68 in (2024) |
| August 9 | 98.1°F (1983) | -74.7°F (2022) | 2.71 in (1962) |
| August 10 | 98.1°F (1979) | -75.8°F (2022) | 3.66 in (1990) |
| August 11 | 100.0°F (1983) | -78.9°F (2022) | 2.76 in (1982) |
| August 12 | 97.0°F (1977) | -77.8°F (2022) | 2.42 in (1989) |
| August 13 | 98.1°F (2002) | -75.8°F (2022) | 3.38 in (1992) |
| August 14 | 97.0°F (2023) | -78.9°F (2022) | 5.80 in (1953) |
| August 15 | 97.0°F (1980) | -78.9°F (2022) | 4.38 in (1980) |
| August 16 | 100.0°F (2002) | -57.8°F (2022) | 2.52 in (1992) |
| August 17 | 97.0°F (1988) | -79.8°F (2022) | 2.81 in (1953) |
| August 18 | 96.1°F (1959) | -75.8°F (2022) | 2.19 in (1989) |
| August 19 | 95.0°F (1954) | 64.9°F (1957) | 1.84 in (1981) |
| August 20 | 102.0°F (1983) | 63.0°F (1964) | 2.55 in (1956) |
| August 21 | 97.0°F (1959) | 61.0°F (1998) | 0.83 in (1988) |
| August 22 | 100.9°F (1983) | -52.8°F (2015) | 3.13 in (1981) |
| August 23 | 96.1°F (2002) | -41.8°F (2015) | 1.68 in (1955) |
| August 24 | 98.1°F (1968) | -70.8°F (2015) | 3.30 in (1990) |
| August 25 | 99.0°F (2007) | 59.0°F (1994) | 1.69 in (1958) |
| August 26 | 98.1°F (1975) | 60.1°F (2013) | 1.27 in (1958) |
| August 27 | 98.1°F (1959) | 61.0°F (1981) | 6.15 in (2011) |
| August 28 | 99.0°F (1993) | 57.9°F (1986) | 2.52 in (1947) |
| August 29 | 98.1°F (1998) | 55.0°F (1982) | 2.96 in (2017) |
| August 30 | 97.0°F (2010) | 52.0°F (1982) | 1.57 in (2004) |
| August 31 | 96.1°F (1953) | 55.9°F (1965) | 6.43 in (1964) |