May is one of the warmer months of the year in Brockton, with average highs near 19°C and lows around 8.2°C (mean 13.6°C). It is about average for rainfall, averaging 94 mm of rainfall and 79% relative humidity across the period.
May is one of the warmer months of the year in Brockton. Across 45 years of records, the warmest May in Brockton was 2015 — when the month averaged 16°C — while the coldest was 2005 at 10.8°C. Typical May days reach 19°C with nights near 8.2°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Brockton, averaging 94 mm of rainfall. The wettest May on record was 1984 with 216 mm, while the driest was 1993 at 35 mm.
Relative humidity in Brockton during May averages 79%. The most humid May was 1983 at 83%, and the least humid was 2002 at 73%.
May receives about 5.3 kWh/m²/day of solar energy in Brockton. The sunniest May was 2023 at 6.7 kWh/m²/day, and the cloudiest was 1984 at 4.3.
Average wind speed in Brockton during May is 0.4 m/s. The windiest Mays were 2022, 2023 and 2025, among others at 0.4 m/s, while the calmest were 2015, 2018 and 2024, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.3°C | 13.1°C | 13.3°C | 14.5°C | 14.1°C | +0.8°C |
| Avg High | 18.7°C | 18.6°C | 18.7°C | 19.9°C | 19.5°C | +0.8°C |
| Avg Low | 7.9°C | 7.6°C | 7.9°C | 9.2°C | 8.7°C | +0.8°C |
| Avg Rain | 102 mm | 86 mm | 100 mm | 83 mm | 107 mm | +6 mm |
May temperatures in Brockton have risen by about 1.1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -0.5°C (2008) to a record high of 31.5°C (2007).
Rainfall in May is about average for rainfall, averaging 94 mm, with a wettest year of 216 mm.
A good time to visit Brockton
May is a good time to visit Brockton, with days averaging 19°C and nights around 8.2°C (mean 13.6°C, warmer than Brockton's yearly average) and higher rainfall. August and July are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 19.4°C | 14.4°C | 9.3°C | 26.4°C | 3.9°C | 195 mm | 81% | 0.4 m/s | 4.5 |
| 2024 | 19.9°C | 14.9°C | 9.9°C | 26.4°C | 3.7°C | 149 mm | 83% | 0.3 m/s | 5.2 |
| 2023 | 19.4°C | 13.4°C | 7.3°C | 25.2°C | 0.5°C | 74 mm | 73% | 0.4 m/s | 6.7 |
| 2022 | 20.3°C | 15.0°C | 9.7°C | 29.1°C | 2.5°C | 44 mm | 76% | 0.4 m/s | 6 |
| 2021 | 19.5°C | 14.2°C | 8.9°C | 28.1°C | 4.0°C | 124 mm | 75% | 0.4 m/s | 5.6 |
| 2020 | 18.4°C | 12.7°C | 7.0°C | 26.1°C | 0.7°C | 59 mm | 76% | 0.4 m/s | 6.4 |
| 2019 | 17.7°C | 12.8°C | 7.9°C | 26.5°C | 2.7°C | 90 mm | 81% | 0.4 m/s | 4.8 |
| 2018 | 21.2°C | 15.6°C | 10.0°C | 28.8°C | 4.2°C | 47 mm | 81% | 0.3 m/s | 5.6 |
| 2017 | 17.7°C | 13.0°C | 8.2°C | 28.3°C | 2.3°C | 143 mm | 81% | 0.4 m/s | 4.5 |
| 2016 | 19.1°C | 13.8°C | 8.5°C | 31.4°C | 2.3°C | 78 mm | 78% | 0.4 m/s | 5.2 |
| 2015 🔥 | 22.3°C | 16.0°C | 9.8°C | 27.4°C | 3.3°C | 40 mm | 74% | 0.3 m/s | 6.1 |
| 2014 | 19.0°C | 13.9°C | 8.7°C | 24.9°C | 4.4°C | 71 mm | 79% | 0.4 m/s | 5.1 |
| 2013 | 20.3°C | 14.4°C | 8.5°C | 30.7°C | 2.6°C | 105 mm | 78% | 0.4 m/s | 5.8 |
| 2012 | 20.8°C | 15.9°C | 11.0°C | 28.4°C | 6.5°C | 109 mm | 81% | 0.3 m/s | 4.7 |
| 2011 | 19.5°C | 14.5°C | 9.6°C | 28.5°C | 2.7°C | 71 mm | 83% | 0.4 m/s | 4.8 |
| 2010 | 21.2°C | 15.5°C | 9.8°C | 31.1°C | 1.5°C | 73 mm | 77% | 0.4 m/s | 6.2 |
| 2009 | 19.2°C | 14.1°C | 9.0°C | 27.1°C | 5.1°C | 85 mm | 79% | 0.4 m/s | 5.1 |
| 2008 | 17.8°C | 12.6°C | 7.4°C | 24.4°C | -0.5°C | 57 mm | 76% | 0.4 m/s | 5.6 |
| 2007 | 20.1°C | 14.1°C | 8.2°C | 31.5°C | 0.8°C | 77 mm | 77% | 0.4 m/s | 6.1 |
| 2006 | 18.0°C | 13.3°C | 8.5°C | 27.8°C | 3.6°C | 209 mm | 82% | 0.4 m/s | 4.7 |
| 2005 ❄️ | 15.4°C | 10.8°C | 6.3°C | 22.8°C | 1.7°C | 118 mm | 82% | 0.4 m/s | 4.4 |
| 2004 | 20.6°C | 14.6°C | 8.5°C | 27.9°C | 1.4°C | 83 mm | 80% | 0.3 m/s | 5.2 |
| 2003 | 17.4°C | 12.2°C | 7.1°C | 25.5°C | 1.0°C | 88 mm | 82% | 0.4 m/s | 4.5 |
| 2002 | 18.7°C | 13.1°C | 7.4°C | 25.7°C | 2.0°C | 125 mm | 73% | 0.4 m/s | 5.6 |
| 2001 | 20.2°C | 14.4°C | 8.7°C | 28.9°C | 1.8°C | 71 mm | 74% | 0.4 m/s | 5.6 |
| 2000 | 19.1°C | 13.4°C | 7.7°C | 28.8°C | 1.0°C | 83 mm | 79% | 0.4 m/s | 5 |
| 1999 | 20.5°C | 14.5°C | 8.4°C | 29.7°C | 1.5°C | 84 mm | 74% | 0.4 m/s | 5.7 |
| 1998 | 19.7°C | 14.4°C | 9.1°C | 26.4°C | 1.3°C | 130 mm | 82% | 0.4 m/s | 5.6 |
| 1997 | 16.5°C | 11.5°C | 6.5°C | 23.9°C | 1.7°C | 78 mm | 77% | 0.4 m/s | 5.3 |
| 1996 | 18.3°C | 12.7°C | 7.1°C | 27.7°C | 0.8°C | 81 mm | 79% | 0.4 m/s | 5.3 |
| 1995 | 17.6°C | 12.3°C | 7.1°C | 24.6°C | 1.9°C | 68 mm | 78% | 0.4 m/s | 5 |
| 1994 | 17.8°C | 12.2°C | 6.6°C | 26.7°C | 2.2°C | 101 mm | 79% | 0.4 m/s | 5.4 |
| 1993 | 19.8°C | 14.2°C | 8.5°C | 26.7°C | 4.2°C | 35 mm | 78% | 0.3 m/s | 5.3 |
| 1992 | 18.3°C | 12.0°C | 5.8°C | 29.6°C | -0.2°C | 49 mm | 76% | 0.4 m/s | 6.1 |
| 1991 | 21.5°C | 15.8°C | 10.0°C | 28.1°C | 4.5°C | 67 mm | 78% | 0.3 m/s | 5.9 |
| 1990 | 16.2°C | 11.4°C | 6.6°C | 21.6°C | 3.7°C | 163 mm | 80% | 0.4 m/s | 4.8 |
| 1989 | 19.1°C | 13.8°C | 8.5°C | 26.1°C | 4.5°C | 140 mm | 82% | 0.4 m/s | 5 |
| 1988 | 18.6°C | 13.3°C | 8.0°C | 26.2°C | 1.6°C | 92 mm | 82% | 0.4 m/s | 4.9 |
| 1987 | 18.1°C | 12.6°C | 7.1°C | 28.6°C | 2.0°C | 54 mm | 81% | 0.4 m/s | 5.6 |
| 1986 | 19.3°C | 13.7°C | 8.1°C | 27.5°C | 0.1°C | 54 mm | 78% | 0.4 m/s | 5.7 |
| 1985 | 18.8°C | 13.2°C | 7.7°C | 27.1°C | 0.7°C | 114 mm | 76% | 0.4 m/s | 5.7 |
| 1984 🌧️ | 17.8°C | 12.7°C | 7.7°C | 24.4°C | 2.1°C | 216 mm | 82% | 0.4 m/s | 4.3 |
| 1983 | 17.3°C | 12.4°C | 7.5°C | 23.3°C | 1.1°C | 111 mm | 83% | 0.4 m/s | — |
| 1982 | 19.6°C | 14.1°C | 8.5°C | 25.9°C | 5.3°C | 65 mm | 80% | 0.3 m/s | — |
| 1981 | 19.6°C | 13.9°C | 8.1°C | 27.7°C | 1.7°C | 69 mm | 76% | 0.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 19°C with lows near 8.2°C (mean 13.6°C), based on 45 years of NASA POWER data.
May averages 94 mm of rainfall in Brockton, about average for rainfall. The wettest on record was 216 mm in 1984.
The hottest May reached 31.5°C in 2007. The coldest dipped to -0.5°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.1°C. Daytime highs moved from 18.6°C to 19.7°C and overnight lows from 7.9°C to 9°C over the same span.
May is one of the warmer months of the year in Brockton and about average for rainfall, so plan for around 19°C daytime highs and 8.2°C at night.
Not quite — May is the 8th coolest month in Brockton, averaging 13.6°C.
For May in Brockton, pack light layers you can adjust through the day, with typical highs of 19°C and lows of 8.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 79% — quite humid.
Average wind speed in May is 0.4 m/s. The windiest May on record averaged 0.4 m/s (1981).
The wettest May on record was 1984 with 216 mm. On average, May sees 94 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 Brockton behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
