May is one of the cooler months of the year in Emerald, with average highs near 26.5°C and lows around 13.1°C (mean 19.8°C). It is one of the drier months, averaging 33 mm of rainfall and 63% relative humidity across the period.
May is one of the cooler months of the year in Emerald. Across 45 years of records, the warmest May in Emerald was 2007 — when the month averaged 22.6°C — while the coldest was 2011 at 16.1°C. Typical May days reach 26.5°C with nights near 13.1°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Emerald, averaging 33 mm of rainfall. The wettest May on record was 1983 with 220 mm, while the driest was 2004 at 0 mm.
Relative humidity in Emerald during May averages 63%. The most humid May was 1983 at 86%, and the least humid was 2001 at 46%.
May receives about 4.3 kWh/m²/day of solar energy in Emerald. The sunniest Mays were 2001 and 2021 at 4.8 kWh/m²/day, and the cloudiest was 2022 at 3.5.
Average wind speed in Emerald during May is 2.4 m/s. The windiest May was 1983 at 2.9 m/s, while the calmest was 2001 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.7°C | 19.9°C | 20.0°C | 19.4°C | 20.1°C | +0.4°C |
| Avg High | 26.0°C | 26.4°C | 27.0°C | 26.2°C | 26.8°C | +0.8°C |
| Avg Low | 13.4°C | 13.5°C | 13.0°C | 12.6°C | 13.3°C | -0.1°C |
| Avg Rain | 68 mm | 32 mm | 19 mm | 20 mm | 28 mm | -40 mm |
May temperatures in Emerald have risen by about 0.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 3°C (1987) to a record high of 34.8°C (2007).
Rainfall in May is one of the drier months, averaging 33 mm, with a wettest year of 220 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows fell 0.1°C per decade, widening the gap between day and night.
One of the best times to visit Emerald
May is one of the best times to visit Emerald. Expect days averaging 26.5°C and nights around 13.1°C (mean 19.8°C) — cooler than Emerald's yearly average — with moderate rainfall (33 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 | 27.1°C | 20.7°C | 14.4°C | 30.6°C | 8.8°C | 27 mm | 68% | 2.4 m/s | 4.1 |
| 2024 | 28.2°C | 21.4°C | 14.7°C | 30.6°C | 8.4°C | 1 mm | 58% | 2.8 m/s | 4.2 |
| 2023 | 26.5°C | 18.5°C | 10.5°C | 29.6°C | 5.7°C | 0 mm | 51% | 2.3 m/s | 4.7 |
| 2022 | 25.8°C | 20.7°C | 15.6°C | 31.1°C | 8.7°C | 119 mm | 75% | 2.4 m/s | 3.5 |
| 2021 | 27.4°C | 20.0°C | 12.6°C | 32.6°C | 5.9°C | 15 mm | 55% | 2.3 m/s | 4.8 |
| 2020 | 26.0°C | 19.1°C | 12.2°C | 31.1°C | 5.3°C | 6 mm | 53% | 2.3 m/s | 4.3 |
| 2019 | 25.7°C | 19.2°C | 12.7°C | 27.7°C | 7.2°C | 1 mm | 67% | 2.4 m/s | 4.1 |
| 2018 | 27.1°C | 20.1°C | 13.1°C | 31.7°C | 7.5°C | 17 mm | 57% | 2.5 m/s | 4.5 |
| 2017 | 26.8°C | 20.3°C | 13.8°C | 28.7°C | 10.1°C | 16 mm | 70% | 2.1 m/s | 4.2 |
| 2016 | 29.7°C | 22.4°C | 15.2°C | 33.8°C | 9.1°C | 1 mm | 53% | 2.2 m/s | 4.3 |
| 2015 | 28.0°C | 20.4°C | 12.7°C | 33.2°C | 6.3°C | 0 mm | 53% | 2.5 m/s | 4.6 |
| 2014 | 27.1°C | 20.5°C | 13.9°C | 31.1°C | 7.2°C | 6 mm | 62% | 2.6 m/s | 4.2 |
| 2013 | 25.2°C | 18.8°C | 12.4°C | 29.5°C | 7.6°C | 51 mm | 71% | 2.5 m/s | 4.1 |
| 2012 | 24.6°C | 17.9°C | 11.3°C | 28.1°C | 4.7°C | 57 mm | 69% | 2.4 m/s | 4.3 |
| 2011 ❄️ | 22.5°C | 16.1°C | 9.7°C | 25.7°C | 4.3°C | 32 mm | 74% | 2.1 m/s | 4.5 |
| 2010 | 25.5°C | 18.4°C | 11.3°C | 28.8°C | 7.0°C | 16 mm | 64% | 2 m/s | 4.3 |
| 2009 | 26.0°C | 19.6°C | 13.2°C | 27.9°C | 9.5°C | 9 mm | 63% | 2.2 m/s | 4.2 |
| 2008 | 26.0°C | 18.8°C | 11.7°C | 29.2°C | 7.1°C | 15 mm | 59% | 2.2 m/s | 4.5 |
| 2007 🔥 | 29.6°C | 22.6°C | 15.5°C | 34.8°C | 10.2°C | 9 mm | 58% | 2.5 m/s | 4.4 |
| 2006 | 26.5°C | 19.2°C | 12.0°C | 29.7°C | 4.3°C | 7 mm | 57% | 2.1 m/s | 4.6 |
| 2005 | 26.2°C | 19.1°C | 12.0°C | 32.6°C | 6.3°C | 60 mm | 60% | 2.3 m/s | 4.4 |
| 2004 | 28.0°C | 20.8°C | 13.5°C | 31.1°C | 7.9°C | 0 mm | 50% | 2.3 m/s | 4.5 |
| 2003 | 27.8°C | 20.7°C | 13.5°C | 34.7°C | 9.4°C | 9 mm | 55% | 2.4 m/s | 4.4 |
| 2002 | 27.9°C | 20.6°C | 13.3°C | 32.7°C | 5.3°C | 37 mm | 50% | 2.4 m/s | 4.5 |
| 2001 | 27.3°C | 19.5°C | 11.8°C | 31.1°C | 6.9°C | 1 mm | 46% | 1.9 m/s | 4.8 |
| 2000 | 24.8°C | 19.1°C | 13.4°C | 29.5°C | 3.6°C | 43 mm | 73% | 2.8 m/s | 3.9 |
| 1999 | 27.7°C | 20.9°C | 14.0°C | 30.8°C | 9.3°C | 16 mm | 61% | 2.5 m/s | 4.6 |
| 1998 | 25.8°C | 19.3°C | 12.8°C | 29.7°C | 5.0°C | 34 mm | 71% | 2.2 m/s | 4.2 |
| 1997 | 25.9°C | 19.4°C | 12.9°C | 30.3°C | 7.7°C | 39 mm | 65% | 2 m/s | 4.2 |
| 1996 | 25.8°C | 19.4°C | 13.0°C | 30.3°C | 7.1°C | 24 mm | 70% | 2.3 m/s | 4.4 |
| 1995 | 26.5°C | 20.3°C | 14.1°C | 31.3°C | 5.4°C | 31 mm | 64% | 2.6 m/s | 3.9 |
| 1994 | 26.5°C | 18.9°C | 11.3°C | 29.4°C | 6.1°C | 16 mm | 59% | 2 m/s | 4.6 |
| 1993 | 28.2°C | 21.6°C | 15.1°C | 31.1°C | 11.5°C | 3 mm | 56% | 2.6 m/s | 4.3 |
| 1992 | 25.9°C | 20.0°C | 14.1°C | 30.4°C | 6.2°C | 50 mm | 68% | 2.3 m/s | 3.8 |
| 1991 | 27.3°C | 20.9°C | 14.5°C | 31.2°C | 11.2°C | 38 mm | 62% | 2.5 m/s | 4.1 |
| 1990 | 24.5°C | 18.6°C | 12.8°C | 27.9°C | 7.4°C | 72 mm | 78% | 2.3 m/s | 4 |
| 1989 | 26.0°C | 20.7°C | 15.4°C | 29.2°C | 11.5°C | 133 mm | 79% | 2.6 m/s | 3.6 |
| 1988 | 26.1°C | 19.6°C | 13.2°C | 31.5°C | 6.5°C | 58 mm | 66% | 2.3 m/s | 4.3 |
| 1987 | 25.9°C | 19.5°C | 13.1°C | 30.3°C | 3.0°C | 19 mm | 67% | 2.3 m/s | 4.1 |
| 1986 | 26.3°C | 19.8°C | 13.3°C | 29.3°C | 6.7°C | 35 mm | 67% | 2.1 m/s | 4.3 |
| 1985 | 26.0°C | 19.5°C | 13.0°C | 29.9°C | 6.1°C | 30 mm | 65% | 2.6 m/s | 4.1 |
| 1984 | 27.1°C | 20.2°C | 13.4°C | 30.0°C | 8.7°C | 6 mm | 53% | 2.3 m/s | 4.4 |
| 1983 🌧️ | 23.0°C | 18.4°C | 13.9°C | 25.9°C | 7.8°C | 220 mm | 86% | 2.9 m/s | — |
| 1982 | 27.4°C | 20.1°C | 12.8°C | 30.1°C | 6.9°C | 13 mm | 54% | 2.2 m/s | — |
| 1981 | 26.0°C | 19.2°C | 12.5°C | 31.7°C | 6.5°C | 100 mm | 61% | 2.7 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 26.5°C with lows near 13.1°C (mean 19.8°C), based on 45 years of NASA POWER data.
May averages 33 mm of rainfall in Emerald, one of the drier months. The wettest on record was 220 mm in 1983.
The hottest May reached 34.8°C in 2007. The coldest dipped to 3°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.8°C. Daytime highs moved from 25.9°C to 27°C and overnight lows from 13.1°C to 13.6°C over the same span.
May is one of the cooler months of the year in Emerald and one of the drier months, so plan for around 26.5°C daytime highs and 13.1°C at night.
Not quite — May is the 4th coolest month in Emerald, averaging 19.8°C.
For May in Emerald, pack light layers you can adjust through the day, with typical highs of 26.5°C and lows of 13.1°C.
Relative humidity in May averages 63% — moderately humid.
Average wind speed in May is 2.4 m/s. The windiest May on record averaged 2.9 m/s (1983).
The wettest May on record was 1983 with 220 mm. On average, May sees 33 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 Emerald 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.
