May is one of the warmer months of the year in Griffin, with average highs near 28°C and lows around 15.1°C (mean 21.6°C). It is one of the drier months, averaging 85 mm of rainfall and 74% relative humidity across the period.
May is one of the warmer months of the year in Griffin. Across 45 years of records, the warmest May in Griffin was 2000 — when the month averaged 24.1°C — while the coldest was 1997 at 19.2°C. Typical May days reach 28°C with nights near 15.1°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Griffin, averaging 85 mm of rainfall. The wettest May on record was 2003 with 199 mm, while the driest was 2007 at 21 mm.
Relative humidity in Griffin during May averages 74%. The most humid May was 2009 at 85%, and the least humid was 2007 at 57%.
May receives about 6 kWh/m²/day of solar energy in Griffin. The sunniest Mays were 2007 and 2019 at 6.8 kWh/m²/day, and the cloudiest were 1991 and 2009 at 4.8.
Average wind speed in Griffin during May is 0.1 m/s. The windiest May was 1982 at 0.2 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.7°C | 21.3°C | 21.9°C | 22.1°C | 21.6°C | +0.9°C |
| Avg High | 27.4°C | 27.7°C | 28.6°C | 28.4°C | 27.7°C | +0.3°C |
| Avg Low | 14.0°C | 14.9°C | 15.3°C | 15.8°C | 15.5°C | +1.5°C |
| Avg Rain | 80 mm | 74 mm | 81 mm | 97 mm | 93 mm | +13 mm |
May temperatures in Griffin have risen by about 1.6°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 4.6°C (1989) to a record high of 37.4°C (2011).
Rainfall in May is one of the drier months, averaging 85 mm, with a wettest year of 199 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
One of the best times to visit Griffin
May is one of the best times to visit Griffin. Expect days averaging 28°C and nights around 15.1°C (mean 21.6°C) — warmer than Griffin's yearly average — with higher rainfall (85 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 | 28.3°C | 22.5°C | 16.7°C | 33.9°C | 9.8°C | 174 mm | 77% | 0.1 m/s | 5.3 |
| 2024 | 28.5°C | 22.9°C | 17.3°C | 31.8°C | 12.2°C | 116 mm | 79% | 0.1 m/s | 5.8 |
| 2023 | 26.0°C | 20.4°C | 14.7°C | 33.0°C | 6.3°C | 70 mm | 79% | 0.1 m/s | 5.6 |
| 2022 | 30.4°C | 23.3°C | 16.2°C | 35.9°C | 9.9°C | 58 mm | 68% | 0.1 m/s | 6.2 |
| 2021 | 27.5°C | 20.7°C | 14.0°C | 35.6°C | 6.4°C | 85 mm | 71% | 0.1 m/s | 6.4 |
| 2020 | 25.7°C | 19.8°C | 13.9°C | 31.0°C | 5.7°C | 57 mm | 79% | 0.1 m/s | 6.4 |
| 2019 | 30.4°C | 23.9°C | 17.4°C | 36.9°C | 9.1°C | 69 mm | 73% | 0.1 m/s | 6.8 |
| 2018 | 28.7°C | 23.0°C | 17.2°C | 34.4°C | 8.4°C | 180 mm | 78% | 0.1 m/s | 5.9 |
| 2017 | 28.0°C | 21.6°C | 15.1°C | 33.4°C | 7.6°C | 156 mm | 74% | 0.1 m/s | 6.2 |
| 2016 | 27.2°C | 21.0°C | 14.7°C | 35.6°C | 6.5°C | 47 mm | 76% | 0.1 m/s | 6.5 |
| 2015 | 28.1°C | 22.0°C | 15.8°C | 31.3°C | 8.0°C | 84 mm | 77% | 0.1 m/s | 6.6 |
| 2014 | 26.9°C | 21.1°C | 15.3°C | 31.7°C | 7.5°C | 77 mm | 80% | 0.1 m/s | 6.3 |
| 2013 | 25.2°C | 19.5°C | 13.8°C | 30.2°C | 5.9°C | 109 mm | 80% | 0.1 m/s | 5.9 |
| 2012 | 30.7°C | 23.8°C | 16.9°C | 37.1°C | 10.8°C | 71 mm | 67% | 0.1 m/s | 6.3 |
| 2011 | 30.9°C | 22.7°C | 14.5°C | 37.4°C | 4.8°C | 24 mm | 62% | 0.1 m/s | 6.7 |
| 2010 | 28.2°C | 22.5°C | 16.9°C | 31.9°C | 8.9°C | 151 mm | 80% | 0.1 m/s | 5.9 |
| 2009 | 25.5°C | 21.1°C | 16.7°C | 31.3°C | 7.4°C | 132 mm | 85% | 0.1 m/s | 4.8 |
| 2008 | 28.2°C | 21.4°C | 14.6°C | 34.5°C | 8.6°C | 78 mm | 72% | 0.1 m/s | 6.2 |
| 2007 | 30.4°C | 22.6°C | 14.8°C | 33.5°C | 7.8°C | 21 mm | 57% | 0.1 m/s | 6.8 |
| 2006 | 29.4°C | 22.3°C | 15.1°C | 36.6°C | 8.4°C | 56 mm | 66% | 0.1 m/s | 6.3 |
| 2005 | 26.0°C | 19.6°C | 13.2°C | 30.3°C | 6.6°C | 67 mm | 77% | 0.1 m/s | 6.2 |
| 2004 | 31.1°C | 24.0°C | 17.0°C | 35.4°C | 5.1°C | 79 mm | 67% | 0.1 m/s | 5.9 |
| 2003 🌧️ | 26.9°C | 21.6°C | 16.3°C | 30.3°C | 10.0°C | 199 mm | 84% | 0.1 m/s | 4.9 |
| 2002 | 29.4°C | 22.0°C | 14.5°C | 34.4°C | 6.3°C | 64 mm | 65% | 0.1 m/s | 6.2 |
| 2001 | 27.0°C | 20.6°C | 14.2°C | 32.0°C | 8.6°C | 88 mm | 76% | 0.1 m/s | 6.2 |
| 2000 🔥 | 32.0°C | 24.1°C | 16.2°C | 35.9°C | 9.0°C | 24 mm | 59% | 0.1 m/s | 6.3 |
| 1999 | 29.7°C | 22.0°C | 14.2°C | 32.6°C | 6.5°C | 58 mm | 63% | 0.1 m/s | 6.3 |
| 1998 | 29.2°C | 23.0°C | 16.9°C | 33.6°C | 10.1°C | 55 mm | 78% | 0.1 m/s | 6.7 |
| 1997 ❄️ | 25.6°C | 19.2°C | 12.8°C | 31.3°C | 5.7°C | 96 mm | 76% | 0.1 m/s | 5.9 |
| 1996 | 28.5°C | 22.3°C | 16.1°C | 34.8°C | 5.2°C | 64 mm | 77% | 0.1 m/s | 6.6 |
| 1995 | 29.8°C | 23.0°C | 16.2°C | 35.3°C | 6.8°C | 54 mm | 69% | 0.1 m/s | 6.1 |
| 1994 | 26.8°C | 20.2°C | 13.6°C | 31.2°C | 8.7°C | 47 mm | 74% | 0.1 m/s | 6.5 |
| 1993 | 25.8°C | 20.0°C | 14.2°C | 29.8°C | 7.3°C | 77 mm | 79% | 0.1 m/s | 5.8 |
| 1992 | 27.0°C | 20.2°C | 13.4°C | 32.4°C | 6.4°C | 34 mm | 70% | 0.1 m/s | 5.8 |
| 1991 | 27.7°C | 22.8°C | 17.9°C | 33.1°C | 10.4°C | 161 mm | 84% | 0.1 m/s | 4.8 |
| 1990 | 26.4°C | 20.2°C | 13.9°C | 30.5°C | 7.3°C | 98 mm | 77% | 0.1 m/s | 6 |
| 1989 | 26.1°C | 19.5°C | 12.9°C | 34.6°C | 4.6°C | 74 mm | 76% | 0.1 m/s | 5.9 |
| 1988 | 28.3°C | 20.6°C | 13.0°C | 34.5°C | 7.9°C | 46 mm | 62% | 0.1 m/s | 6.3 |
| 1987 | 27.6°C | 21.9°C | 16.2°C | 31.7°C | 11.2°C | 82 mm | 80% | 0.1 m/s | 5.6 |
| 1986 | 29.4°C | 22.2°C | 15.0°C | 34.1°C | 6.6°C | 84 mm | 63% | 0.1 m/s | 5.6 |
| 1985 | 28.5°C | 21.6°C | 14.6°C | 35.5°C | 7.6°C | 100 mm | 69% | 0.1 m/s | 5.7 |
| 1984 | 25.9°C | 19.6°C | 13.4°C | 30.9°C | 5.9°C | 121 mm | 79% | 0.1 m/s | 5.5 |
| 1983 | 25.7°C | 19.5°C | 13.3°C | 29.3°C | 7.0°C | 50 mm | 79% | 0.1 m/s | — |
| 1982 | 27.6°C | 21.3°C | 15.1°C | 32.0°C | 6.3°C | 100 mm | 77% | 0.2 m/s | — |
| 1981 | 27.7°C | 20.0°C | 12.3°C | 33.5°C | 6.5°C | 67 mm | 65% | 0.1 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 28°C with lows near 15.1°C (mean 21.6°C), based on 45 years of NASA POWER data.
May averages 85 mm of rainfall in Griffin, one of the drier months. The wettest on record was 199 mm in 2003.
The hottest May reached 37.4°C in 2011. The coldest dipped to 4.6°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.6°C. Daytime highs moved from 27.1°C to 28.1°C and overnight lows from 13.7°C to 15.8°C over the same span.
May is one of the warmer months of the year in Griffin and one of the drier months, so plan for around 28°C daytime highs and 15.1°C at night.
Not quite — May is the 8th coolest month in Griffin, averaging 21.6°C.
For May in Griffin, pack light layers you can adjust through the day, with typical highs of 28°C and lows of 15.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 74% — moderately humid.
Average wind speed in May is 0.1 m/s. The windiest May on record averaged 0.2 m/s (1982).
The wettest May on record was 2003 with 199 mm. On average, May sees 85 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 Griffin 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.
