May is one of the warmer months of the year in Coaldale, with average highs near 17.8°C and lows around 5.1°C (mean 11.5°C). It is a relatively wet time of year, averaging 58 mm of rainfall and 58% relative humidity across the period.
May is one of the warmer months of the year in Coaldale. Across 45 years of records, the warmest May in Coaldale was 2023 — when the month averaged 16°C — while the coldest was 1996 at 8°C. Typical May days reach 17.8°C with nights near 5.1°C. The long-term trend is warming, about 0.2°C per decade.
May is a relatively wet time of year in Coaldale, averaging 58 mm of rainfall. The wettest May on record was 1981 with 141 mm, while the driest was 2001 at 17 mm.
Relative humidity in Coaldale during May averages 58%. The most humid May was 1996 at 67%, and the least humid was 2001 at 44%.
May receives about 5.8 kWh/m²/day of solar energy in Coaldale. The sunniest May was 2001 at 6.7 kWh/m²/day, and the cloudiest was 2010 at 5.
Average wind speed in Coaldale during May is 3.3 m/s. The windiest May was 2001 at 4.3 m/s, while the calmest was 2015 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.6°C | 11.3°C | 11.3°C | 11.2°C | 12.1°C | +0.5°C |
| Avg High | 18.1°C | 17.8°C | 17.6°C | 17.5°C | 18.6°C | +0.5°C |
| Avg Low | 5.1°C | 4.8°C | 5.0°C | 4.9°C | 5.7°C | +0.6°C |
| Avg Rain | 61 mm | 63 mm | 50 mm | 63 mm | 53 mm | -8 mm |
May temperatures in Coaldale have risen by about 1.6°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -5.4°C (2005) to a record high of 32.9°C (2025).
Rainfall in May is a relatively wet time of year, averaging 58 mm, with a wettest year of 141 mm.
A good time to visit Coaldale
May is a good time to visit Coaldale, with days averaging 17.8°C and nights around 5.1°C (mean 11.5°C, warmer than Coaldale's yearly average) and moderate rainfall. July and August 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 | 21.3°C | 14.3°C | 7.3°C | 32.9°C | 1.8°C | 40 mm | 54% | 3 m/s | 6.5 |
| 2024 | 16.5°C | 10.5°C | 4.5°C | 27.1°C | -2.5°C | 107 mm | 63% | 3.5 m/s | 5.4 |
| 2023 🔥 | 23.0°C | 16.0°C | 8.9°C | 30.9°C | 3.6°C | 33 mm | 54% | 2.7 m/s | 6.1 |
| 2022 | 16.9°C | 10.8°C | 4.8°C | 22.9°C | -1.3°C | 25 mm | 53% | 3.8 m/s | 5.7 |
| 2021 | 16.4°C | 10.4°C | 4.5°C | 27.8°C | -2.8°C | 36 mm | 57% | 3.2 m/s | 5.5 |
| 2020 | 17.2°C | 10.8°C | 4.4°C | 27.8°C | -2.5°C | 75 mm | 59% | 3.4 m/s | 5.6 |
| 2019 | 16.7°C | 10.5°C | 4.3°C | 28.6°C | -3.5°C | 87 mm | 61% | 2.7 m/s | 5.1 |
| 2018 | 21.8°C | 15.1°C | 8.4°C | 28.6°C | 1.5°C | 42 mm | 57% | 3 m/s | 6 |
| 2017 | 19.6°C | 12.9°C | 6.3°C | 29.2°C | 0.9°C | 54 mm | 58% | 3.4 m/s | 6.4 |
| 2016 | 18.0°C | 11.5°C | 5.0°C | 28.4°C | -1.0°C | 69 mm | 58% | 3 m/s | 5.7 |
| 2015 | 17.4°C | 10.8°C | 4.2°C | 26.5°C | -1.2°C | 34 mm | 55% | 2.6 m/s | 5.7 |
| 2014 | 16.8°C | 10.6°C | 4.3°C | 27.5°C | -2.8°C | 49 mm | 61% | 2.7 m/s | 5.7 |
| 2013 | 18.7°C | 12.5°C | 6.2°C | 27.5°C | -2.9°C | 62 mm | 56% | 3.2 m/s | 5.9 |
| 2012 | 16.6°C | 10.7°C | 4.8°C | 29.4°C | -1.6°C | 50 mm | 56% | 3.6 m/s | 5.9 |
| 2011 | 15.5°C | 9.4°C | 3.2°C | 21.9°C | -0.6°C | 76 mm | 63% | 3.4 m/s | 5.5 |
| 2010 | 13.9°C | 8.4°C | 2.8°C | 28.2°C | -3.9°C | 104 mm | 62% | 3.3 m/s | 5 |
| 2009 | 18.0°C | 11.3°C | 4.6°C | 30.5°C | -2.7°C | 31 mm | 54% | 3.5 m/s | 6.5 |
| 2008 | 17.8°C | 11.7°C | 5.6°C | 30.6°C | -1.7°C | 87 mm | 60% | 3.2 m/s | 5.2 |
| 2007 | 18.2°C | 12.0°C | 5.8°C | 26.8°C | 1.5°C | 68 mm | 59% | 3.3 m/s | 5.8 |
| 2006 | 19.1°C | 12.8°C | 6.5°C | 30.3°C | -3.0°C | 39 mm | 58% | 3.3 m/s | 6.4 |
| 2005 | 18.2°C | 11.5°C | 4.7°C | 23.8°C | -5.4°C | 27 mm | 54% | 3.3 m/s | 6.5 |
| 2004 | 15.3°C | 9.6°C | 3.9°C | 23.9°C | -4.0°C | 79 mm | 62% | 3.4 m/s | 5.2 |
| 2003 | 16.3°C | 10.3°C | 4.3°C | 28.8°C | -2.8°C | 53 mm | 61% | 3.3 m/s | 5.5 |
| 2002 | 15.0°C | 8.9°C | 2.7°C | 27.2°C | -3.7°C | 75 mm | 60% | 3.4 m/s | 5.5 |
| 2001 | 20.3°C | 13.3°C | 6.3°C | 31.6°C | 0.7°C | 17 mm | 44% | 4.3 m/s | 6.7 |
| 2000 | 17.9°C | 11.6°C | 5.3°C | 23.1°C | -0.9°C | 22 mm | 51% | 3.7 m/s | 6.2 |
| 1999 | 16.5°C | 10.4°C | 4.4°C | 29.4°C | -3.3°C | 46 mm | 54% | 3.7 m/s | 5.8 |
| 1998 | 20.7°C | 13.8°C | 6.9°C | 27.5°C | 2.6°C | 48 mm | 51% | 3.3 m/s | 6.5 |
| 1997 | 17.8°C | 11.2°C | 4.5°C | 27.2°C | -0.8°C | 94 mm | 61% | 3.3 m/s | 5.6 |
| 1996 ❄️ | 13.7°C | 8.0°C | 2.4°C | 19.4°C | -4.2°C | 65 mm | 67% | 2.9 m/s | 5.3 |
| 1995 | 16.8°C | 10.1°C | 3.5°C | 28.6°C | -3.5°C | 88 mm | 61% | 2.7 m/s | 5.6 |
| 1994 | 18.7°C | 12.2°C | 5.7°C | 27.0°C | 1.4°C | 59 mm | 60% | 3.2 m/s | 5.8 |
| 1993 | 20.3°C | 13.2°C | 6.1°C | 28.8°C | 0.3°C | 54 mm | 58% | 3 m/s | 6.1 |
| 1992 | 20.1°C | 12.9°C | 5.7°C | 29.8°C | -3.0°C | 30 mm | 50% | 3.5 m/s | 6.4 |
| 1991 | 17.1°C | 10.9°C | 4.7°C | 24.8°C | -4.8°C | 73 mm | 60% | 3.2 m/s | 5.5 |
| 1990 | 16.5°C | 10.2°C | 3.9°C | 25.9°C | -2.9°C | 70 mm | 62% | 3 m/s | 5.5 |
| 1989 | 17.5°C | 10.8°C | 4.2°C | 25.2°C | -0.3°C | 59 mm | 55% | 3.8 m/s | 5.8 |
| 1988 | 20.9°C | 13.9°C | 6.9°C | 31.1°C | 0.1°C | 27 mm | 48% | 3.8 m/s | 5.8 |
| 1987 | 20.3°C | 13.5°C | 6.7°C | 28.3°C | -1.5°C | 32 mm | 53% | 3.8 m/s | 6 |
| 1986 | 18.2°C | 11.9°C | 5.6°C | 32.7°C | -3.4°C | 79 mm | 62% | 3.2 m/s | 5.9 |
| 1985 | 19.9°C | 13.1°C | 6.3°C | 26.7°C | 0.2°C | 57 mm | 55% | 3 m/s | 6.3 |
| 1984 | 15.8°C | 9.8°C | 3.8°C | 28.3°C | -0.4°C | 46 mm | 58% | 4 m/s | 6.1 |
| 1983 | 17.4°C | 10.9°C | 4.3°C | 27.7°C | -4.4°C | 45 mm | 59% | 3.3 m/s | — |
| 1982 | 15.8°C | 9.3°C | 2.8°C | 26.2°C | -3.6°C | 62 mm | 61% | 3.4 m/s | — |
| 1981 🌧️ | 16.7°C | 11.0°C | 5.4°C | 23.9°C | -0.4°C | 141 mm | 66% | 3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 17.8°C with lows near 5.1°C (mean 11.5°C), based on 45 years of NASA POWER data.
May averages 58 mm of rainfall in Coaldale, a relatively wet time of year. The wettest on record was 141 mm in 1981.
The hottest May reached 32.9°C in 2025. The coldest dipped to -5.4°C in 2005.
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 17.1°C to 18.8°C and overnight lows from 4.5°C to 6°C over the same span.
May is one of the warmer months of the year in Coaldale and a relatively wet time of year, so plan for around 17.8°C daytime highs and 5.1°C at night.
Not quite — May is the 8th coolest month in Coaldale, averaging 11.5°C.
For May in Coaldale, pack warm layers and a jacket for chilly mornings, with typical highs of 17.8°C and lows of 5.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 58% — moderately humid.
Average wind speed in May is 3.3 m/s. The windiest May on record averaged 4.3 m/s (2001).
The wettest May on record was 1981 with 141 mm. On average, May sees 58 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 Coaldale 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.
