May is one of the warmer months of the year in Mau, with average highs near 42.4°C and lows around 27.7°C (mean 35.1°C). It is one of the drier months, averaging 36 mm of rainfall and 29% relative humidity across the period.
May is one of the warmer months of the year in Mau. Across 45 years of records, the warmest May in Mau was 1991 — when the month averaged 36.9°C — while the coldest was 2021 at 31.5°C. Typical May days reach 42.4°C with nights near 27.7°C. The long-term trend is cooling, about 0.2°C per decade.
May is one of the drier months in Mau, averaging 36 mm of rainfall. The wettest May on record was 2021 with 225 mm, while the driest was 1995 at 0 mm.
Relative humidity in Mau during May averages 29%. The most humid May was 2021 at 47%, and the least humid was 1996 at 17%.
May receives about 6.7 kWh/m²/day of solar energy in Mau. The sunniest May was 1985 at 7.5 kWh/m²/day, and the cloudiest was 2021 at 5.
Average wind speed in Mau during May is 2.5 m/s. The windiest May was 1989 at 3.4 m/s, while the calmest was 2008 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 34.9°C | 35.8°C | 34.7°C | 35.4°C | 33.8°C | -1.1°C |
| Avg High | 42.8°C | 43.5°C | 41.6°C | 42.7°C | 40.5°C | -2.3°C |
| Avg Low | 27.1°C | 28.0°C | 27.8°C | 28.1°C | 27.1°C | 0°C |
| Avg Rain | 23 mm | 21 mm | 46 mm | 35 mm | 65 mm | +42 mm |
May temperatures in Mau have fallen by about 1.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 20.3°C (1982) to a record high of 48.7°C (1988).
Rainfall in May is one of the drier months, averaging 36 mm, with a wettest year of 225 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit Mau
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting Mau. That said, May — with days averaging 42.4°C and nights around 27.7°C (mean 35.1°C) and moderate rainfall (36 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 | 40.6°C | 34.2°C | 27.9°C | 44.6°C | 24.7°C | 43 mm | 39% | 2.7 m/s | 5.8 |
| 2024 | 42.3°C | 35.3°C | 28.4°C | 48.7°C | 22.3°C | 12 mm | 30% | 2.7 m/s | 6.1 |
| 2023 | 40.3°C | 33.1°C | 25.9°C | 44.6°C | 22.3°C | 31 mm | 32% | 2.1 m/s | 6.6 |
| 2022 | 41.9°C | 35.1°C | 28.2°C | 45.2°C | 26.5°C | 18 mm | 33% | 2.3 m/s | 6.1 |
| 2021 ❄️ 🌧️ | 37.2°C | 31.5°C | 25.7°C | 42.5°C | 23.4°C | 225 mm | 47% | 2.4 m/s | 5 |
| 2020 | 40.7°C | 33.5°C | 26.3°C | 47.5°C | 22.4°C | 59 mm | 37% | 2.5 m/s | 6.6 |
| 2019 | 44.3°C | 36.3°C | 28.3°C | 46.7°C | 24.7°C | 6 mm | 20% | 2.8 m/s | 6.8 |
| 2018 | 41.3°C | 34.4°C | 27.4°C | 45.6°C | 24.4°C | 37 mm | 37% | 2.5 m/s | 6.2 |
| 2017 | 43.0°C | 36.1°C | 29.1°C | 46.8°C | 24.7°C | 35 mm | 30% | 2.2 m/s | 6.4 |
| 2016 | 42.0°C | 35.2°C | 28.4°C | 46.5°C | 25.5°C | 54 mm | 31% | 2.1 m/s | 6.2 |
| 2015 | 43.7°C | 35.9°C | 28.2°C | 47.3°C | 24.8°C | 19 mm | 24% | 2 m/s | 6.7 |
| 2014 | 42.4°C | 35.2°C | 28.0°C | 45.8°C | 24.0°C | 51 mm | 28% | 3.1 m/s | 6.8 |
| 2013 | 42.3°C | 34.5°C | 26.7°C | 45.9°C | 24.0°C | 48 mm | 25% | 2.4 m/s | 6.8 |
| 2012 | 43.8°C | 36.0°C | 28.3°C | 46.3°C | 23.9°C | 4 mm | 18% | 2.1 m/s | 7 |
| 2011 | 41.7°C | 34.9°C | 28.0°C | 44.9°C | 25.1°C | 59 mm | 36% | 2.3 m/s | 6.7 |
| 2010 | 42.9°C | 35.9°C | 28.8°C | 46.6°C | 26.0°C | 38 mm | 31% | 2.5 m/s | 6.4 |
| 2009 | 40.7°C | 34.2°C | 27.6°C | 45.8°C | 25.1°C | 60 mm | 37% | 2.8 m/s | 6.4 |
| 2008 | 41.1°C | 34.3°C | 27.6°C | 43.9°C | 23.8°C | 54 mm | 32% | 1.9 m/s | 6.6 |
| 2007 | 40.8°C | 34.3°C | 27.7°C | 44.1°C | 26.2°C | 58 mm | 37% | 2.4 m/s | 6.7 |
| 2006 | 40.8°C | 34.7°C | 28.7°C | 44.6°C | 25.1°C | 52 mm | 39% | 2.2 m/s | 6.1 |
| 2005 | 42.7°C | 34.9°C | 27.1°C | 46.1°C | 21.5°C | 11 mm | 23% | 2.3 m/s | 7 |
| 2004 | 42.7°C | 35.2°C | 27.6°C | 47.0°C | 20.5°C | 44 mm | 28% | 2.3 m/s | 6.8 |
| 2003 | 42.7°C | 34.8°C | 26.8°C | 45.4°C | 20.6°C | 4 mm | 21% | 2.6 m/s | 6.8 |
| 2002 | 41.0°C | 34.0°C | 26.9°C | 46.2°C | 24.3°C | 78 mm | 39% | 2.7 m/s | 6.4 |
| 2001 | 41.8°C | 35.3°C | 28.8°C | 45.3°C | 26.3°C | 55 mm | 35% | 2.2 m/s | 6.6 |
| 2000 | 42.0°C | 35.6°C | 29.3°C | 46.0°C | 25.0°C | 46 mm | 34% | 2.4 m/s | 6.4 |
| 1999 | 41.9°C | 34.8°C | 27.7°C | 46.8°C | 23.3°C | 60 mm | 33% | 2.1 m/s | 6.5 |
| 1998 | 43.5°C | 36.0°C | 28.4°C | 48.6°C | 24.8°C | 25 mm | 28% | 2.3 m/s | 6.9 |
| 1997 | 42.9°C | 34.9°C | 26.8°C | 45.6°C | 22.1°C | 25 mm | 19% | 2.5 m/s | 6.9 |
| 1996 | 44.8°C | 36.5°C | 28.1°C | 47.9°C | 24.6°C | 1 mm | 17% | 2.6 m/s | 6.9 |
| 1995 | 44.5°C | 36.5°C | 28.6°C | 46.0°C | 25.5°C | 0 mm | 20% | 3 m/s | 7.2 |
| 1994 | 43.5°C | 35.8°C | 28.1°C | 46.5°C | 24.7°C | 19 mm | 23% | 2.5 m/s | 7.2 |
| 1993 | 43.3°C | 35.4°C | 27.5°C | 47.7°C | 24.8°C | 22 mm | 23% | 2.3 m/s | 7.2 |
| 1992 | 42.4°C | 34.6°C | 26.8°C | 46.4°C | 23.6°C | 34 mm | 24% | 2.7 m/s | 7 |
| 1991 🔥 | 45.1°C | 36.9°C | 28.7°C | 46.8°C | 24.3°C | 10 mm | 18% | 2.8 m/s | 7.1 |
| 1990 | 42.7°C | 36.1°C | 29.5°C | 46.8°C | 25.0°C | 14 mm | 28% | 2.2 m/s | 6.5 |
| 1989 | 42.6°C | 34.9°C | 27.1°C | 45.5°C | 22.1°C | 30 mm | 27% | 3.4 m/s | 7.1 |
| 1988 | 44.3°C | 36.0°C | 27.6°C | 48.7°C | 24.3°C | 16 mm | 24% | 2.5 m/s | 7.1 |
| 1987 | 41.9°C | 34.3°C | 26.8°C | 46.5°C | 20.9°C | 15 mm | 25% | 2.7 m/s | 7 |
| 1986 | 41.4°C | 33.5°C | 25.7°C | 43.8°C | 21.1°C | 31 mm | 27% | 2.4 m/s | 7.2 |
| 1985 | 44.0°C | 36.0°C | 28.0°C | 46.9°C | 25.2°C | 6 mm | 20% | 2.2 m/s | 7.5 |
| 1984 | 44.5°C | 36.0°C | 27.5°C | 47.8°C | 22.2°C | 6 mm | 22% | 3 m/s | 7.1 |
| 1983 | 42.3°C | 34.9°C | 27.5°C | 45.0°C | 23.2°C | 19 mm | 25% | 2 m/s | — |
| 1982 | 41.8°C | 34.1°C | 26.4°C | 45.6°C | 20.3°C | 28 mm | 29% | 2.4 m/s | — |
| 1981 | 42.0°C | 34.8°C | 27.6°C | 44.9°C | 24.8°C | 57 mm | 33% | 2.5 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 42.4°C with lows near 27.7°C (mean 35.1°C), based on 45 years of NASA POWER data.
May averages 36 mm of rainfall in Mau, one of the drier months. The wettest on record was 225 mm in 2021.
The hottest May reached 48.7°C in 1988. The coldest dipped to 20.3°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 1.4°C. Daytime highs moved from 42.9°C to 40.5°C and overnight lows from 27.4°C to 27.2°C over the same span.
May is one of the warmer months of the year in Mau and one of the drier months, so plan for around 42.4°C daytime highs and 27.7°C at night.
Not quite — May is the 11th coolest month in Mau, averaging 35.1°C.
For May in Mau, pack light, breathable clothing and sun protection, with typical highs of 42.4°C and lows of 27.7°C.
Relative humidity in May averages 29% — relatively dry.
Average wind speed in May is 2.5 m/s. The windiest May on record averaged 3.4 m/s (1989).
The wettest May on record was 2021 with 225 mm. On average, May sees 36 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 Mau 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.
