August is one of the warmer months of the year in Haverhill, with average highs near 26.5°C and lows around 15.4°C (mean 21°C). It is about average for rainfall, averaging 92 mm of rainfall and 76% relative humidity across the period.
August is one of the warmer months of the year in Haverhill. Across 45 years of records, the warmest August in Haverhill was 2022 — when the month averaged 24.1°C — while the coldest was 1982 at 18.4°C. Typical August days reach 26.5°C with nights near 15.4°C. The long-term trend is warming, about 0.5°C per decade.
August is about average for rainfall in Haverhill, averaging 92 mm of rainfall. The wettest August on record was 1991 with 229 mm, while the driest was 1996 at 19 mm.
Relative humidity in Haverhill during August averages 76%. The most humid August was 2009 at 83%, and the least humid was 2002 at 61%.
August receives about 5.2 kWh/m²/day of solar energy in Haverhill. The sunniest Augusts were 2002 and 2025 at 5.8 kWh/m²/day, and the cloudiest was 2021 at 4.7.
Average wind speed in Haverhill during August is 0.2 m/s. The windiest Augusts were 2023, 2024 and 2025, among others at 0.2 m/s, while the calmest were 2001, 2003 and 2021 at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.9°C | 20.6°C | 21.1°C | 21.5°C | 21.9°C | +2°C |
| Avg High | 25.5°C | 26.3°C | 26.5°C | 27.0°C | 27.5°C | +2°C |
| Avg Low | 14.3°C | 15.0°C | 15.6°C | 16.0°C | 16.3°C | +2°C |
| Avg Rain | 86 mm | 98 mm | 87 mm | 104 mm | 82 mm | -4 mm |
August temperatures in Haverhill have risen by about 1.7°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 5.3°C (1982) to a record high of 37.9°C (2002).
Rainfall in August is about average for rainfall, averaging 92 mm, with a wettest year of 229 mm.
One of the best times to visit Haverhill
August is one of the best times to visit Haverhill. Expect days averaging 26.5°C and nights around 15.4°C (mean 21°C) — warmer than Haverhill's yearly average — with higher rainfall (92 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 28.1°C | 21.5°C | 15.0°C | 35.5°C | 10.5°C | 28 mm | 65% | 0.2 m/s | 5.8 |
| 2024 | 26.2°C | 20.9°C | 15.7°C | 32.0°C | 10.9°C | 121 mm | 78% | 0.2 m/s | 4.8 |
| 2023 | 24.8°C | 20.1°C | 15.4°C | 27.5°C | 11.3°C | 141 mm | 83% | 0.2 m/s | 4.9 |
| 2022 🔥 | 30.2°C | 24.1°C | 18.0°C | 37.1°C | 14.3°C | 68 mm | 69% | 0.2 m/s | 5.5 |
| 2021 | 27.0°C | 22.1°C | 17.2°C | 32.1°C | 12.1°C | 87 mm | 82% | 0.1 m/s | 4.7 |
| 2020 | 28.5°C | 22.5°C | 16.6°C | 34.8°C | 11.0°C | 49 mm | 68% | 0.2 m/s | 5.2 |
| 2019 | 26.8°C | 21.2°C | 15.6°C | 30.8°C | 9.8°C | 110 mm | 76% | 0.2 m/s | 5.6 |
| 2018 | 27.6°C | 22.6°C | 17.7°C | 33.3°C | 12.8°C | 134 mm | 82% | 0.2 m/s | 5 |
| 2017 | 25.6°C | 20.2°C | 14.8°C | 30.3°C | 9.9°C | 76 mm | 75% | 0.2 m/s | 5.4 |
| 2016 | 29.5°C | 23.2°C | 17.0°C | 35.1°C | 11.8°C | 61 mm | 68% | 0.2 m/s | 5.7 |
| 2015 | 28.4°C | 22.6°C | 16.8°C | 34.0°C | 13.2°C | 69 mm | 73% | 0.2 m/s | 5.5 |
| 2014 | 25.5°C | 20.0°C | 14.6°C | 30.7°C | 10.8°C | 96 mm | 76% | 0.2 m/s | 5.4 |
| 2013 | 25.6°C | 20.3°C | 14.9°C | 30.4°C | 10.7°C | 74 mm | 77% | 0.2 m/s | 5.5 |
| 2012 | 27.9°C | 22.2°C | 16.4°C | 31.8°C | 11.8°C | 114 mm | 75% | 0.2 m/s | 5.6 |
| 2011 | 26.0°C | 20.9°C | 15.9°C | 30.8°C | 12.4°C | 204 mm | 80% | 0.2 m/s | 5 |
| 2010 | 27.0°C | 21.5°C | 15.9°C | 32.8°C | 11.4°C | 105 mm | 74% | 0.2 m/s | 5.1 |
| 2009 | 26.0°C | 21.0°C | 16.1°C | 31.1°C | 11.1°C | 103 mm | 83% | 0.2 m/s | 5.3 |
| 2008 | 24.5°C | 19.4°C | 14.3°C | 28.5°C | 9.6°C | 109 mm | 81% | 0.2 m/s | 5.3 |
| 2007 | 26.7°C | 20.7°C | 14.7°C | 33.9°C | 8.4°C | 60 mm | 74% | 0.2 m/s | 5.4 |
| 2006 | 24.2°C | 19.4°C | 14.6°C | 32.1°C | 9.4°C | 90 mm | 83% | 0.2 m/s | 5.2 |
| 2005 | 27.2°C | 21.9°C | 16.7°C | 32.6°C | 12.6°C | 76 mm | 78% | 0.2 m/s | 5.2 |
| 2004 | 25.8°C | 20.5°C | 15.3°C | 31.0°C | 10.0°C | 138 mm | 80% | 0.2 m/s | 5.1 |
| 2003 | 26.8°C | 21.7°C | 16.6°C | 31.9°C | 10.1°C | 128 mm | 80% | 0.1 m/s | 4.8 |
| 2002 | 30.1°C | 23.4°C | 16.8°C | 37.9°C | 9.3°C | 50 mm | 61% | 0.2 m/s | 5.8 |
| 2001 | 29.3°C | 23.0°C | 16.7°C | 35.1°C | 11.7°C | 53 mm | 69% | 0.1 m/s | 5.2 |
| 2000 | 24.7°C | 19.5°C | 14.3°C | 29.5°C | 10.2°C | 62 mm | 80% | 0.2 m/s | 4.9 |
| 1999 | 27.1°C | 21.0°C | 15.0°C | 32.9°C | 10.0°C | 62 mm | 68% | 0.2 m/s | 5 |
| 1998 | 26.0°C | 20.8°C | 15.6°C | 29.1°C | 10.1°C | 71 mm | 80% | 0.2 m/s | 5.2 |
| 1997 | 25.2°C | 19.9°C | 14.5°C | 32.0°C | 11.7°C | 107 mm | 76% | 0.2 m/s | 5.1 |
| 1996 | 26.3°C | 20.6°C | 15.0°C | 30.8°C | 11.3°C | 19 mm | 76% | 0.2 m/s | 5.3 |
| 1995 | 27.6°C | 21.2°C | 14.7°C | 34.3°C | 9.1°C | 50 mm | 67% | 0.2 m/s | 5.5 |
| 1994 | 25.8°C | 20.0°C | 14.3°C | 30.9°C | 9.4°C | 109 mm | 75% | 0.2 m/s | 5.1 |
| 1993 | 27.8°C | 21.5°C | 15.2°C | 33.8°C | 9.7°C | 57 mm | 71% | 0.2 m/s | 5.5 |
| 1992 | 24.8°C | 19.4°C | 14.0°C | 30.4°C | 9.5°C | 97 mm | 77% | 0.2 m/s | 5.1 |
| 1991 🌧️ | 26.4°C | 21.0°C | 15.6°C | 31.3°C | 10.7°C | 229 mm | 78% | 0.2 m/s | 5.2 |
| 1990 | 25.6°C | 20.6°C | 15.6°C | 30.8°C | 8.5°C | 174 mm | 80% | 0.2 m/s | 5 |
| 1989 | 24.8°C | 19.7°C | 14.6°C | 29.5°C | 7.9°C | 117 mm | 78% | 0.2 m/s | 5.1 |
| 1988 | 27.1°C | 21.5°C | 16.0°C | 32.7°C | 7.1°C | 111 mm | 76% | 0.2 m/s | 5.2 |
| 1987 | 24.9°C | 19.0°C | 13.1°C | 33.3°C | 7.9°C | 74 mm | 72% | 0.2 m/s | 5.3 |
| 1986 | 24.2°C | 18.9°C | 13.6°C | 27.4°C | 5.6°C | 79 mm | 78% | 0.2 m/s | 4.9 |
| 1985 | 25.6°C | 19.8°C | 14.0°C | 31.4°C | 9.6°C | 117 mm | 73% | 0.2 m/s | 5 |
| 1984 | 26.1°C | 20.8°C | 15.5°C | 30.9°C | 9.3°C | 46 mm | 81% | 0.2 m/s | 5.7 |
| 1983 | 26.7°C | 20.8°C | 14.9°C | 31.4°C | 9.5°C | 100 mm | 75% | 0.2 m/s | — |
| 1982 ❄️ | 23.8°C | 18.4°C | 12.9°C | 28.1°C | 5.3°C | 70 mm | 77% | 0.2 m/s | — |
| 1981 | 26.5°C | 20.2°C | 14.0°C | 31.2°C | 8.5°C | 63 mm | 71% | 0.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 26.5°C with lows near 15.4°C (mean 21°C), based on 45 years of NASA POWER data.
August averages 92 mm of rainfall in Haverhill, about average for rainfall. The wettest on record was 229 mm in 1991.
The hottest August reached 37.9°C in 2002. The coldest dipped to 5.3°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.7°C. Daytime highs moved from 25.7°C to 27.3°C and overnight lows from 14.3°C to 16.3°C over the same span.
August is one of the warmer months of the year in Haverhill and about average for rainfall, so plan for around 26.5°C daytime highs and 15.4°C at night.
Not quite — August is the 11th coolest month in Haverhill, averaging 21°C.
For August in Haverhill, pack light layers you can adjust through the day, with typical highs of 26.5°C and lows of 15.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 76% — quite humid.
Average wind speed in August is 0.2 m/s. The windiest August on record averaged 0.2 m/s (1981).
The wettest August on record was 1991 with 229 mm. On average, August sees 92 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 Haverhill 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.
