August is one of the warmer months of the year in Visalia, with average highs near 37.8°C and lows around 21.1°C (mean 29.5°C). It is one of the drier months, averaging 4 mm of rainfall and 24% relative humidity across the period.
August is one of the warmer months of the year in Visalia. Across 45 years of records, the warmest August in Visalia was 2022 — when the month averaged 31.7°C — while the coldest was 1989 at 26.9°C. Typical August days reach 37.8°C with nights near 21.1°C. The long-term trend is warming, about 0.4°C per decade.
August is one of the drier months in Visalia, averaging 4 mm of rainfall. The wettest August on record was 2023 with 30 mm, while the driest were 2008, 2010 and 2019, among others at 0 mm.
Relative humidity in Visalia during August averages 24%. The most humid August was 2023 at 32%, and the least humid was 1986 at 18%.
August receives about 7.4 kWh/m²/day of solar energy in Visalia. The sunniest August was 1998 at 7.9 kWh/m²/day, and the cloudiest was 1984 at 6.6.
Average wind speed in Visalia during August is 1.5 m/s. The windiest Augusts were 1996 and 2017 at 1.7 m/s, while the calmest were 1983 and 2011 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.7°C | 29.3°C | 29.3°C | 29.7°C | 30.7°C | +2°C |
| Avg High | 37.2°C | 37.7°C | 37.7°C | 38.1°C | 38.7°C | +1.5°C |
| Avg Low | 20.3°C | 20.9°C | 20.9°C | 21.3°C | 22.7°C | +2.4°C |
| Avg Rain | 6 mm | 2 mm | 5 mm | 1 mm | 9 mm | +3 mm |
August temperatures in Visalia have risen by about 1.8°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 13.5°C (1987) to a record high of 46.8°C (1998).
Rainfall in August is one of the drier months, averaging 4 mm, with a wettest year of 30 mm.
A good time to visit Visalia
August is a good time to visit Visalia, with days averaging 37.8°C and nights around 21.1°C (mean 29.5°C, warmer than Visalia's yearly average) and low rainfall. May and October are marginally more temperate, but August still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 38.9°C | 30.6°C | 22.4°C | 43.3°C | 19.1°C | 6 mm | 24% | 1.6 m/s | 7.3 |
| 2024 | 38.4°C | 30.5°C | 22.5°C | 45.0°C | 16.8°C | 1 mm | 23% | 1.6 m/s | 7.3 |
| 2023 🌧️ | 37.6°C | 29.8°C | 22.0°C | 43.4°C | 18.6°C | 30 mm | 32% | 1.6 m/s | 7.1 |
| 2022 🔥 | 39.6°C | 31.7°C | 23.9°C | 43.1°C | 21.0°C | 10 mm | 26% | 1.5 m/s | 7.1 |
| 2021 | 38.9°C | 30.5°C | 22.1°C | 42.7°C | 18.1°C | 1 mm | 24% | 1.5 m/s | 7.1 |
| 2020 | 38.9°C | 31.0°C | 23.1°C | 45.2°C | 17.1°C | 4 mm | 26% | 1.5 m/s | 6.9 |
| 2019 | 38.7°C | 30.7°C | 22.6°C | 43.3°C | 19.1°C | 0 mm | 23% | 1.6 m/s | 7.5 |
| 2018 | 38.2°C | 29.9°C | 21.6°C | 42.3°C | 16.0°C | 1 mm | 21% | 1.5 m/s | 7.3 |
| 2017 | 39.2°C | 31.4°C | 23.5°C | 45.4°C | 18.5°C | 3 mm | 26% | 1.7 m/s | 7 |
| 2016 | 38.2°C | 29.3°C | 20.3°C | 42.6°C | 17.9°C | 0 mm | 21% | 1.5 m/s | 7.6 |
| 2015 | 37.5°C | 29.4°C | 21.2°C | 41.3°C | 18.3°C | 0 mm | 27% | 1.5 m/s | 7.3 |
| 2014 | 37.5°C | 29.3°C | 21.0°C | 43.4°C | 16.8°C | 3 mm | 27% | 1.6 m/s | 7.2 |
| 2013 | 37.0°C | 28.9°C | 20.7°C | 40.9°C | 17.4°C | 3 mm | 26% | 1.5 m/s | 7.5 |
| 2012 | 40.0°C | 31.4°C | 22.8°C | 45.6°C | 17.2°C | 2 mm | 20% | 1.6 m/s | 7.3 |
| 2011 | 37.8°C | 29.0°C | 20.1°C | 41.2°C | 17.0°C | 0 mm | 23% | 1.4 m/s | 7.7 |
| 2010 | 36.5°C | 27.9°C | 19.3°C | 45.5°C | 14.2°C | 0 mm | 25% | 1.6 m/s | 7.7 |
| 2009 | 37.3°C | 29.0°C | 20.7°C | 40.9°C | 15.6°C | 1 mm | 24% | 1.5 m/s | 7.3 |
| 2008 | 38.9°C | 30.2°C | 21.6°C | 42.7°C | 17.5°C | 0 mm | 24% | 1.6 m/s | 7.6 |
| 2007 | 37.9°C | 29.7°C | 21.4°C | 42.8°C | 16.5°C | 9 mm | 26% | 1.5 m/s | 7.4 |
| 2006 | 36.9°C | 28.2°C | 19.5°C | 41.4°C | 17.4°C | 6 mm | 26% | 1.5 m/s | 7.7 |
| 2005 | 38.6°C | 30.3°C | 22.0°C | 43.2°C | 18.8°C | 7 mm | 25% | 1.6 m/s | 7.4 |
| 2004 | 37.4°C | 29.1°C | 20.8°C | 42.9°C | 17.4°C | 5 mm | 27% | 1.6 m/s | 7.5 |
| 2003 | 37.1°C | 29.3°C | 21.5°C | 40.0°C | 18.4°C | 8 mm | 29% | 1.5 m/s | 7.4 |
| 2002 | 37.1°C | 28.3°C | 19.5°C | 41.6°C | 15.9°C | 2 mm | 23% | 1.5 m/s | 7.5 |
| 2001 | 38.1°C | 29.4°C | 20.7°C | 43.4°C | 16.3°C | 7 mm | 27% | 1.6 m/s | 7.7 |
| 2000 | 37.6°C | 29.2°C | 20.8°C | 44.3°C | 16.3°C | 5 mm | 24% | 1.5 m/s | 7.5 |
| 1999 | 35.4°C | 27.4°C | 19.4°C | 42.3°C | 15.0°C | 3 mm | 28% | 1.6 m/s | 7.4 |
| 1998 | 40.2°C | 31.3°C | 22.4°C | 46.8°C | 16.7°C | 3 mm | 21% | 1.6 m/s | 7.9 |
| 1997 | 37.6°C | 29.2°C | 20.9°C | 45.5°C | 16.9°C | 2 mm | 27% | 1.6 m/s | 7.6 |
| 1996 | 39.5°C | 30.9°C | 22.3°C | 45.3°C | 17.4°C | 1 mm | 20% | 1.7 m/s | 7.6 |
| 1995 | 38.4°C | 29.8°C | 21.2°C | 43.8°C | 17.0°C | 2 mm | 21% | 1.5 m/s | 7.8 |
| 1994 | 38.9°C | 30.2°C | 21.4°C | 44.1°C | 17.6°C | 0 mm | 20% | 1.5 m/s | 7.2 |
| 1993 | 36.3°C | 27.9°C | 19.6°C | 41.4°C | 15.6°C | 1 mm | 26% | 1.6 m/s | 7.3 |
| 1992 | 38.8°C | 30.4°C | 22.0°C | 43.1°C | 16.4°C | 3 mm | 22% | 1.6 m/s | 7.3 |
| 1991 | 35.2°C | 27.3°C | 19.4°C | 40.4°C | 15.2°C | 1 mm | 28% | 1.6 m/s | 7.3 |
| 1990 | 36.3°C | 28.1°C | 19.9°C | 44.7°C | 14.2°C | 2 mm | 28% | 1.6 m/s | 7.3 |
| 1989 ❄️ | 35.4°C | 26.9°C | 18.3°C | 39.9°C | 14.3°C | 4 mm | 24% | 1.5 m/s | 7.4 |
| 1988 | 37.5°C | 29.2°C | 21.0°C | 41.6°C | 16.1°C | 6 mm | 27% | 1.6 m/s | 7.2 |
| 1987 | 37.5°C | 28.7°C | 20.0°C | 42.7°C | 13.5°C | 1 mm | 23% | 1.5 m/s | 7.2 |
| 1986 | 38.4°C | 29.7°C | 21.0°C | 41.4°C | 18.3°C | 3 mm | 18% | 1.5 m/s | 7.1 |
| 1985 | 36.4°C | 27.8°C | 19.2°C | 40.5°C | 15.9°C | 0 mm | 21% | 1.5 m/s | 7.2 |
| 1984 | 37.7°C | 29.6°C | 21.5°C | 42.2°C | 17.6°C | 7 mm | 25% | 1.6 m/s | 6.6 |
| 1983 | 36.3°C | 28.8°C | 21.2°C | 43.2°C | 16.2°C | 24 mm | 31% | 1.4 m/s | — |
| 1982 | 36.9°C | 28.8°C | 20.6°C | 41.5°C | 16.4°C | 8 mm | 24% | 1.5 m/s | — |
| 1981 | 38.4°C | 29.2°C | 20.1°C | 43.7°C | 16.4°C | 2 mm | 19% | 1.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 37.8°C with lows near 21.1°C (mean 29.5°C), based on 45 years of NASA POWER data.
August averages 4 mm of rainfall in Visalia, one of the drier months. The wettest on record was 30 mm in 2023.
The hottest August reached 46.8°C in 1998. The coldest dipped to 13.5°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.8°C. Daytime highs moved from 37.1°C to 38.7°C and overnight lows from 20.5°C to 22.6°C over the same span.
August is one of the warmer months of the year in Visalia and one of the drier months, so plan for around 37.8°C daytime highs and 21.1°C at night.
Not quite — August is the 11th coolest month in Visalia, averaging 29.5°C.
For August in Visalia, pack light, breathable clothing and sun protection, with typical highs of 37.8°C and lows of 21.1°C.
Relative humidity in August averages 24% — relatively dry.
Average wind speed in August is 1.5 m/s. The windiest August on record averaged 1.7 m/s (1996).
The wettest August on record was 2023 with 30 mm. On average, August sees 4 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Visalia behaves each August, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for August specifically, along with year-by-year records and how the month has changed over the decades.
