May is one of the warmer months of the year in Miami, with average highs near 27.4°C and lows around 25.1°C (mean 26.3°C). It is about average for rainfall, averaging 124 mm of rainfall and 74% relative humidity across the period.
May is one of the warmer months of the year in Miami. Across 45 years of records, the warmest May in Miami was 2024 — when the month averaged 28.1°C — while the coldest was 1992 at 24.8°C. Typical May days reach 27.4°C with nights near 25.1°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Miami, averaging 124 mm of rainfall. The wettest May on record was 2018 with 339 mm, while the driest was 1992 at 17 mm.
Relative humidity in Miami during May averages 74%. The most humid May was 2018 at 81%, and the least humid was 1992 at 68%.
May receives about 6.3 kWh/m²/day of solar energy in Miami. The sunniest May was 1992 at 6.9 kWh/m²/day, and the cloudiest was 2018 at 4.7.
Average wind speed in Miami during May is 4.1 m/s. The windiest May was 2007 at 5.2 m/s, while the calmest were 2006 and 2023 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.7°C | 26.1°C | 26.1°C | 26.4°C | 27.1°C | +1.4°C |
| Avg High | 26.9°C | 27.3°C | 27.4°C | 27.6°C | 28.3°C | +1.4°C |
| Avg Low | 24.5°C | 25.0°C | 24.9°C | 25.3°C | 25.9°C | +1.4°C |
| Avg Rain | 129 mm | 118 mm | 119 mm | 131 mm | 122 mm | -8 mm |
May temperatures in Miami have risen by about 1.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 17.1°C (1999) to a record high of 31.9°C (2017).
Rainfall in May is about average for rainfall, averaging 124 mm, with a wettest year of 339 mm.
A good time to visit Miami
May is a good time to visit Miami, with days averaging 27.4°C and nights around 25.1°C (mean 26.3°C, close to Miami's yearly average) and higher rainfall. February and December 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 | 28.9°C | 27.6°C | 26.4°C | 30.5°C | 24.4°C | 89 mm | 76% | 3.7 m/s | 6.6 |
| 2024 🔥 | 29.5°C | 28.1°C | 26.8°C | 31.7°C | 24.6°C | 60 mm | 76% | 3.8 m/s | 6.8 |
| 2023 | 28.1°C | 26.7°C | 25.4°C | 30.0°C | 22.5°C | 118 mm | 74% | 3.3 m/s | 6.5 |
| 2022 | 28.1°C | 26.9°C | 25.7°C | 29.9°C | 22.6°C | 135 mm | 76% | 3.7 m/s | 6.5 |
| 2021 | 27.7°C | 26.7°C | 25.8°C | 29.5°C | 24.3°C | 60 mm | 73% | 4.7 m/s | 6.7 |
| 2020 | 27.5°C | 26.3°C | 25.1°C | 29.6°C | 21.2°C | 269 mm | 76% | 4.7 m/s | 5.9 |
| 2019 | 27.8°C | 26.9°C | 25.9°C | 29.8°C | 24.9°C | 104 mm | 76% | 4.2 m/s | 6.6 |
| 2018 🌧️ | 26.6°C | 25.8°C | 25.0°C | 28.3°C | 23.9°C | 339 mm | 81% | 5 m/s | 4.7 |
| 2017 | 28.3°C | 26.9°C | 25.5°C | 31.9°C | 20.3°C | 65 mm | 74% | 4.2 m/s | 6.7 |
| 2016 | 27.5°C | 26.3°C | 25.1°C | 29.7°C | 20.0°C | 145 mm | 73% | 3.8 m/s | 6.3 |
| 2015 | 27.5°C | 26.5°C | 25.4°C | 30.5°C | 22.1°C | 60 mm | 74% | 4.3 m/s | 6.7 |
| 2014 | 27.4°C | 26.3°C | 25.3°C | 29.1°C | 23.2°C | 73 mm | 73% | 4.7 m/s | 6.6 |
| 2013 | 27.2°C | 25.8°C | 24.5°C | 30.1°C | 21.2°C | 207 mm | 74% | 4.3 m/s | 6 |
| 2012 | 27.3°C | 26.3°C | 25.2°C | 29.5°C | 23.8°C | 182 mm | 78% | 3.8 m/s | 5.9 |
| 2011 | 28.0°C | 26.7°C | 25.4°C | 30.1°C | 23.0°C | 51 mm | 70% | 4 m/s | 6.5 |
| 2010 | 27.9°C | 26.7°C | 25.6°C | 29.8°C | 24.6°C | 79 mm | 77% | 3.8 m/s | 6.4 |
| 2009 | 27.3°C | 26.3°C | 25.2°C | 29.1°C | 23.4°C | 220 mm | 77% | 3.9 m/s | 6.2 |
| 2008 | 28.0°C | 26.5°C | 25.0°C | 30.6°C | 22.1°C | 65 mm | 72% | 4.4 m/s | 6.7 |
| 2007 | 27.0°C | 25.7°C | 24.4°C | 29.6°C | 21.1°C | 90 mm | 73% | 5.2 m/s | 6.1 |
| 2006 | 27.7°C | 26.1°C | 24.6°C | 29.7°C | 22.2°C | 110 mm | 73% | 3.3 m/s | 6.2 |
| 2005 | 27.3°C | 25.9°C | 24.5°C | 30.7°C | 22.2°C | 108 mm | 75% | 3.9 m/s | 6.2 |
| 2004 | 26.8°C | 25.7°C | 24.7°C | 29.8°C | 22.6°C | 43 mm | 73% | 5.1 m/s | 6.8 |
| 2003 | 28.4°C | 27.2°C | 26.0°C | 29.8°C | 23.9°C | 229 mm | 77% | 3.8 m/s | 6.3 |
| 2002 | 27.7°C | 26.5°C | 25.4°C | 29.4°C | 23.4°C | 127 mm | 75% | 4.6 m/s | 6.4 |
| 2001 | 26.4°C | 25.3°C | 24.1°C | 29.2°C | 22.3°C | 146 mm | 74% | 4.7 m/s | 5.7 |
| 2000 | 27.4°C | 26.2°C | 25.1°C | 29.8°C | 22.5°C | 52 mm | 71% | 4 m/s | 6.7 |
| 1999 | 27.4°C | 26.0°C | 24.6°C | 29.9°C | 17.1°C | 90 mm | 72% | 3.5 m/s | 6.6 |
| 1998 | 27.9°C | 26.6°C | 25.4°C | 30.3°C | 23.1°C | 83 mm | 73% | 3.7 m/s | 6.5 |
| 1997 | 27.5°C | 26.4°C | 25.4°C | 30.3°C | 22.8°C | 114 mm | 76% | 3.8 m/s | 6.2 |
| 1996 | 27.2°C | 26.3°C | 25.4°C | 29.3°C | 24.5°C | 215 mm | 77% | 4.1 m/s | 6 |
| 1995 | 28.3°C | 27.2°C | 26.1°C | 29.9°C | 24.4°C | 86 mm | 74% | 3.6 m/s | 6.5 |
| 1994 | 27.4°C | 26.3°C | 25.2°C | 29.1°C | 21.8°C | 118 mm | 75% | 3.6 m/s | 6.6 |
| 1993 | 26.0°C | 24.9°C | 23.8°C | 28.5°C | 21.2°C | 126 mm | 74% | 4.8 m/s | 6.1 |
| 1992 ❄️ | 26.3°C | 24.8°C | 23.3°C | 28.5°C | 17.3°C | 17 mm | 68% | 4 m/s | 6.9 |
| 1991 | 27.4°C | 26.6°C | 25.8°C | 28.6°C | 24.4°C | 142 mm | 76% | 4.8 m/s | 5.8 |
| 1990 | 27.1°C | 26.1°C | 25.1°C | 28.7°C | 23.2°C | 187 mm | 77% | 4.4 m/s | 5.8 |
| 1989 | 28.2°C | 26.8°C | 25.5°C | 29.9°C | 21.8°C | 49 mm | 71% | 3.7 m/s | 6.8 |
| 1988 | 26.7°C | 25.5°C | 24.3°C | 29.5°C | 20.9°C | 125 mm | 73% | 3.7 m/s | 5.8 |
| 1987 | 26.4°C | 25.5°C | 24.6°C | 27.3°C | 22.6°C | 127 mm | 74% | 4.5 m/s | 6.4 |
| 1986 | 26.1°C | 25.1°C | 24.1°C | 27.8°C | 22.2°C | 106 mm | 74% | 4.3 m/s | 6.3 |
| 1985 | 27.5°C | 26.1°C | 24.7°C | 29.8°C | 22.6°C | 98 mm | 72% | 3.4 m/s | 6.4 |
| 1984 | 26.8°C | 25.7°C | 24.7°C | 28.6°C | 22.3°C | 263 mm | 76% | 4.5 m/s | 5.8 |
| 1983 | 26.4°C | 25.3°C | 24.1°C | 28.4°C | 21.1°C | 64 mm | 72% | 4.3 m/s | — |
| 1982 | 25.9°C | 25.0°C | 24.1°C | 28.0°C | 22.2°C | 219 mm | 75% | 4.9 m/s | — |
| 1981 | 27.8°C | 26.3°C | 24.7°C | 29.9°C | 22.6°C | 113 mm | 71% | 4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 27.4°C with lows near 25.1°C (mean 26.3°C), based on 45 years of NASA POWER data.
May averages 124 mm of rainfall in Miami, about average for rainfall. The wettest on record was 339 mm in 2018.
The hottest May reached 31.9°C in 2017. The coldest dipped to 17.1°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.5°C. Daytime highs moved from 26.9°C to 28.5°C and overnight lows from 24.5°C to 26°C over the same span.
May is one of the warmer months of the year in Miami and about average for rainfall, so plan for around 27.4°C daytime highs and 25.1°C at night.
Not quite — May is the 7th coolest month in Miami, averaging 26.3°C.
For May in Miami, pack light layers you can adjust through the day, with typical highs of 27.4°C and lows of 25.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 74% — moderately humid.
Average wind speed in May is 4.1 m/s. The windiest May on record averaged 5.2 m/s (2007).
The wettest May on record was 2018 with 339 mm. On average, May sees 124 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 Miami 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.
