August is one of the warmer months of the year in Lake Havasu City, with average highs near 39.9°C and lows around 26.1°C (mean 33°C). It is a relatively wet time of year, averaging 25 mm of rainfall and 30% relative humidity across the period.
August is one of the warmer months of the year in Lake Havasu City. Across 45 years of records, the warmest August in Lake Havasu City was 2020 — when the month averaged 35.7°C — while the coldest was 2014 at 30.4°C. Typical August days reach 39.9°C with nights near 26.1°C. The long-term trend is warming, about 0.5°C per decade.
August is a relatively wet time of year in Lake Havasu City, averaging 25 mm of rainfall. The wettest August on record was 1983 with 71 mm, while the driest was 2002 at 1 mm.
Relative humidity in Lake Havasu City during August averages 30%. The most humid August was 1983 at 44%, and the least humid were 1985 and 2020 at 20%.
August receives about 7.1 kWh/m²/day of solar energy in Lake Havasu City. The sunniest Augusts were 2006, 2009 and 2019, among others at 7.5 kWh/m²/day, and the cloudiest was 1984 at 6.5.
Average wind speed in Lake Havasu City during August is 2.4 m/s. The windiest Augusts were 1997, 2002 and 2024 at 2.8 m/s, while the calmest were 1983, 1984 and 2022 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.9°C | 32.9°C | 32.8°C | 33.3°C | 34.5°C | +2.6°C |
| Avg High | 38.7°C | 39.9°C | 39.7°C | 40.2°C | 41.3°C | +2.6°C |
| Avg Low | 25.2°C | 26.0°C | 25.9°C | 26.4°C | 27.7°C | +2.5°C |
| Avg Rain | 38 mm | 19 mm | 24 mm | 25 mm | 16 mm | -23 mm |
August temperatures in Lake Havasu City have risen by about 2.1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 18.2°C (1990) to a record high of 47.8°C (2021).
Rainfall in August is a relatively wet time of year, averaging 25 mm, with a wettest year of 71 mm.
A quieter season to visit Lake Havasu City
If your dates are flexible, the more temperate months of October and April tend to be the most comfortable for visiting Lake Havasu City. That said, August — with days averaging 39.9°C and nights around 26.1°C (mean 33°C) and low rainfall (25 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 41.8°C | 34.6°C | 27.4°C | 45.7°C | 24.3°C | 8 mm | 21% | 2.4 m/s | 7.1 |
| 2024 | 41.6°C | 34.8°C | 28.0°C | 46.0°C | 21.6°C | 5 mm | 23% | 2.8 m/s | 7.1 |
| 2023 | 41.1°C | 34.3°C | 27.5°C | 45.7°C | 20.2°C | 21 mm | 27% | 2.4 m/s | 6.9 |
| 2022 | 39.0°C | 33.3°C | 27.7°C | 44.9°C | 25.0°C | 47 mm | 40% | 1.8 m/s | 6.6 |
| 2021 | 40.9°C | 34.1°C | 27.3°C | 47.8°C | 21.9°C | 10 mm | 29% | 2.6 m/s | 7.1 |
| 2020 🔥 | 43.3°C | 35.7°C | 28.1°C | 47.7°C | 24.0°C | 1 mm | 20% | 2.4 m/s | 7.3 |
| 2019 | 42.2°C | 34.5°C | 26.8°C | 46.3°C | 22.2°C | 3 mm | 20% | 2.4 m/s | 7.5 |
| 2018 | 40.8°C | 34.0°C | 27.3°C | 45.2°C | 22.5°C | 19 mm | 30% | 2.6 m/s | 7.2 |
| 2017 | 40.7°C | 33.9°C | 27.2°C | 45.0°C | 21.0°C | 13 mm | 26% | 2.2 m/s | 7.2 |
| 2016 | 39.7°C | 33.0°C | 26.3°C | 44.3°C | 22.3°C | 26 mm | 32% | 2.5 m/s | 7 |
| 2015 | 41.3°C | 34.2°C | 27.2°C | 45.8°C | 23.9°C | 11 mm | 26% | 2.6 m/s | 7.1 |
| 2014 ❄️ | 36.9°C | 30.4°C | 23.9°C | 41.9°C | 20.3°C | 63 mm | 39% | 2.1 m/s | 6.9 |
| 2013 | 38.3°C | 31.8°C | 25.3°C | 43.9°C | 20.1°C | 61 mm | 32% | 2.4 m/s | 6.8 |
| 2012 | 40.3°C | 33.8°C | 27.2°C | 45.7°C | 24.2°C | 28 mm | 35% | 2.1 m/s | 6.9 |
| 2011 | 42.2°C | 34.7°C | 27.1°C | 45.6°C | 22.7°C | 3 mm | 21% | 2.4 m/s | 7.4 |
| 2010 | 39.4°C | 32.4°C | 25.5°C | 44.9°C | 18.5°C | 17 mm | 28% | 2.7 m/s | 7.4 |
| 2009 | 40.3°C | 32.8°C | 25.3°C | 45.2°C | 20.5°C | 12 mm | 21% | 2.2 m/s | 7.5 |
| 2008 | 39.1°C | 32.3°C | 25.6°C | 44.9°C | 23.2°C | 42 mm | 34% | 2.4 m/s | 6.9 |
| 2007 | 40.2°C | 33.5°C | 26.8°C | 44.8°C | 20.1°C | 14 mm | 32% | 2.3 m/s | 7.2 |
| 2006 | 39.5°C | 32.5°C | 25.5°C | 43.4°C | 22.9°C | 21 mm | 30% | 2.5 m/s | 7.5 |
| 2005 | 38.1°C | 31.9°C | 25.7°C | 44.3°C | 21.9°C | 49 mm | 40% | 2.2 m/s | 6.9 |
| 2004 | 39.5°C | 32.4°C | 25.4°C | 45.5°C | 20.5°C | 17 mm | 26% | 2.4 m/s | 7 |
| 2003 | 39.5°C | 33.4°C | 27.2°C | 45.4°C | 23.7°C | 27 mm | 34% | 2.3 m/s | 6.7 |
| 2002 | 40.9°C | 32.9°C | 24.8°C | 45.5°C | 21.7°C | 1 mm | 20% | 2.8 m/s | 7.5 |
| 2001 | 40.3°C | 33.3°C | 26.4°C | 45.7°C | 21.7°C | 19 mm | 29% | 2.3 m/s | 7.2 |
| 2000 | 39.8°C | 33.1°C | 26.3°C | 45.6°C | 20.6°C | 36 mm | 32% | 2.6 m/s | 6.7 |
| 1999 | 39.6°C | 32.3°C | 25.1°C | 43.7°C | 19.0°C | 12 mm | 26% | 2.4 m/s | 7 |
| 1998 | 41.4°C | 34.3°C | 27.3°C | 46.0°C | 22.3°C | 25 mm | 29% | 2.4 m/s | 7.2 |
| 1997 | 40.0°C | 33.3°C | 26.5°C | 43.9°C | 23.2°C | 19 mm | 32% | 2.8 m/s | 7.2 |
| 1996 | 41.3°C | 34.0°C | 26.7°C | 44.1°C | 21.2°C | 8 mm | 27% | 2.6 m/s | 7.4 |
| 1995 | 41.6°C | 34.6°C | 27.5°C | 46.5°C | 22.2°C | 16 mm | 25% | 2.3 m/s | 7 |
| 1994 | 41.2°C | 34.3°C | 27.5°C | 45.5°C | 24.0°C | 10 mm | 28% | 2.4 m/s | 6.6 |
| 1993 | 38.3°C | 31.4°C | 24.4°C | 45.6°C | 18.8°C | 21 mm | 30% | 2.6 m/s | 7.2 |
| 1992 | 38.5°C | 32.3°C | 26.1°C | 45.0°C | 18.8°C | 41 mm | 36% | 2.4 m/s | 6.8 |
| 1991 | 39.1°C | 32.0°C | 24.9°C | 43.6°C | 20.6°C | 16 mm | 27% | 2.4 m/s | 7 |
| 1990 | 37.9°C | 30.7°C | 23.6°C | 43.5°C | 18.2°C | 25 mm | 32% | 2.5 m/s | 7.2 |
| 1989 | 38.5°C | 31.0°C | 23.5°C | 43.0°C | 18.6°C | 16 mm | 28% | 2.6 m/s | 7.2 |
| 1988 | 37.8°C | 31.1°C | 24.4°C | 42.9°C | 20.6°C | 70 mm | 37% | 2.1 m/s | 6.6 |
| 1987 | 38.7°C | 31.9°C | 25.1°C | 42.9°C | 20.0°C | 14 mm | 28% | 2.3 m/s | 7.1 |
| 1986 | 39.4°C | 32.9°C | 26.3°C | 43.3°C | 22.7°C | 38 mm | 34% | 2.2 m/s | 7 |
| 1985 | 41.1°C | 33.2°C | 25.2°C | 45.9°C | 22.3°C | 2 mm | 20% | 2.4 m/s | 7.2 |
| 1984 | 37.3°C | 31.2°C | 25.1°C | 43.8°C | 21.9°C | 56 mm | 42% | 1.8 m/s | 6.5 |
| 1983 🌧️ | 36.5°C | 30.8°C | 25.1°C | 42.9°C | 20.6°C | 71 mm | 44% | 1.8 m/s | — |
| 1982 | 37.6°C | 31.5°C | 25.4°C | 43.2°C | 22.2°C | 58 mm | 38% | 2 m/s | — |
| 1981 | 41.4°C | 33.9°C | 26.5°C | 44.7°C | 22.5°C | 22 mm | 25% | 2.4 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 39.9°C with lows near 26.1°C (mean 33°C), based on 45 years of NASA POWER data.
August averages 25 mm of rainfall in Lake Havasu City, a relatively wet time of year. The wettest on record was 71 mm in 1983.
The hottest August reached 47.8°C in 2021. The coldest dipped to 18.2°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.1°C. Daytime highs moved from 38.8°C to 40.9°C and overnight lows from 25.5°C to 27.6°C over the same span.
August is one of the warmer months of the year in Lake Havasu City and a relatively wet time of year, so plan for around 39.9°C daytime highs and 26.1°C at night.
Not quite — August is the 11th coolest month in Lake Havasu City, averaging 33°C.
For August in Lake Havasu City, pack light, breathable clothing and sun protection, with typical highs of 39.9°C and lows of 26.1°C.
Relative humidity in August averages 30% — relatively dry.
Average wind speed in August is 2.4 m/s. The windiest August on record averaged 2.8 m/s (1997).
The wettest August on record was 1983 with 71 mm. On average, August sees 25 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 Lake Havasu City 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.
