May is one of the cooler months of the year in Carnarvon, with average highs near 26.7°C and lows around 18.2°C (mean 22.5°C). It is about average for rainfall, averaging 23 mm of rainfall and 59% relative humidity across the period.
May is one of the cooler months of the year in Carnarvon. Across 45 years of records, the warmest May in Carnarvon was 1998 — when the month averaged 24.8°C — while the coldest was 2000 at 20.3°C. Typical May days reach 26.7°C with nights near 18.2°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Carnarvon, averaging 23 mm of rainfall. The wettest May on record was 2005 with 102 mm, while the driest was 2019 at 0 mm.
Relative humidity in Carnarvon during May averages 59%. The most humid May was 2005 at 69%, and the least humid was 2025 at 46%.
May receives about 4.3 kWh/m²/day of solar energy in Carnarvon. The sunniest May was 2017 at 4.8 kWh/m²/day, and the cloudiest was 1999 at 3.5.
Average wind speed in Carnarvon during May is 4.4 m/s. The windiest May was 1990 at 5.4 m/s, while the calmest was 2005 at 3.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.4°C | 22.7°C | 22.4°C | 22.0°C | 22.9°C | +0.5°C |
| Avg High | 26.5°C | 26.6°C | 26.7°C | 26.4°C | 27.5°C | +1°C |
| Avg Low | 18.4°C | 18.8°C | 18.0°C | 17.6°C | 18.2°C | -0.2°C |
| Avg Rain | 27 mm | 33 mm | 21 mm | 15 mm | 22 mm | -5 mm |
May temperatures in Carnarvon have risen by about 0.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 10.8°C (2019) to a record high of 35.1°C (2025).
Rainfall in May is about average for rainfall, averaging 23 mm, with a wettest year of 102 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows fell 0.2°C per decade, widening the gap between day and night.
One of the best times to visit Carnarvon
May is one of the best times to visit Carnarvon. Expect days averaging 26.7°C and nights around 18.2°C (mean 22.5°C) — cooler than Carnarvon's yearly average — with low rainfall (23 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 | 29.3°C | 24.0°C | 18.7°C | 35.1°C | 13.5°C | 13 mm | 46% | 4.3 m/s | 4.6 |
| 2024 | 28.6°C | 23.9°C | 19.2°C | 33.3°C | 13.7°C | 5 mm | 52% | 4 m/s | 4.5 |
| 2023 | 27.6°C | 23.0°C | 18.4°C | 33.2°C | 14.6°C | 8 mm | 52% | 3.8 m/s | 4.4 |
| 2022 | 26.3°C | 22.2°C | 18.1°C | 31.1°C | 12.4°C | 14 mm | 61% | 4.1 m/s | 4 |
| 2021 | 26.5°C | 22.3°C | 18.2°C | 32.0°C | 12.0°C | 80 mm | 64% | 4.2 m/s | 4 |
| 2020 | 26.9°C | 21.8°C | 16.8°C | 31.7°C | 12.4°C | 10 mm | 50% | 4.8 m/s | 4.4 |
| 2019 | 27.8°C | 22.4°C | 17.0°C | 31.9°C | 10.8°C | 0 mm | 51% | 4.3 m/s | 4.7 |
| 2018 | 27.3°C | 22.4°C | 17.4°C | 32.7°C | 14.1°C | 16 mm | 52% | 4.7 m/s | 4.7 |
| 2017 | 27.2°C | 22.5°C | 17.7°C | 32.5°C | 13.9°C | 3 mm | 56% | 4.4 m/s | 4.8 |
| 2016 | 25.5°C | 21.6°C | 17.7°C | 30.2°C | 13.1°C | 7 mm | 61% | 5.2 m/s | 4.3 |
| 2015 | 25.7°C | 21.0°C | 16.2°C | 29.4°C | 13.4°C | 12 mm | 59% | 4.8 m/s | 4.5 |
| 2014 | 25.4°C | 21.7°C | 18.1°C | 29.3°C | 12.9°C | 43 mm | 68% | 4.4 m/s | 4.1 |
| 2013 | 25.4°C | 21.6°C | 17.8°C | 32.9°C | 12.6°C | 23 mm | 64% | 4.7 m/s | 4 |
| 2012 | 27.9°C | 23.1°C | 18.2°C | 33.2°C | 13.1°C | 1 mm | 56% | 4.5 m/s | 4.5 |
| 2011 | 25.7°C | 21.7°C | 17.6°C | 29.8°C | 15.3°C | 29 mm | 59% | 4.5 m/s | 4.2 |
| 2010 | 26.3°C | 22.0°C | 17.8°C | 33.2°C | 12.0°C | 13 mm | 58% | 4.7 m/s | 4.3 |
| 2009 | 27.3°C | 22.3°C | 17.4°C | 32.3°C | 13.7°C | 4 mm | 50% | 4.1 m/s | 4.5 |
| 2008 | 26.4°C | 21.9°C | 17.4°C | 30.1°C | 12.8°C | 2 mm | 67% | 4 m/s | 4.6 |
| 2007 | 26.0°C | 21.9°C | 17.8°C | 30.6°C | 12.6°C | 1 mm | 63% | 4.7 m/s | 4.4 |
| 2006 | 27.8°C | 22.7°C | 17.6°C | 30.8°C | 14.8°C | 19 mm | 55% | 4.2 m/s | 4.2 |
| 2005 🌧️ | 27.7°C | 23.8°C | 19.8°C | 33.2°C | 16.2°C | 102 mm | 69% | 3.4 m/s | 3.9 |
| 2004 | 25.3°C | 21.4°C | 17.5°C | 30.0°C | 11.0°C | 19 mm | 60% | 4.5 m/s | 4.5 |
| 2003 | 27.6°C | 23.5°C | 19.5°C | 33.3°C | 14.2°C | 11 mm | 61% | 4.2 m/s | 4.2 |
| 2002 | 27.2°C | 23.5°C | 19.9°C | 32.6°C | 13.3°C | 34 mm | 67% | 3.7 m/s | 3.8 |
| 2001 | 26.4°C | 22.4°C | 18.3°C | 32.1°C | 13.7°C | 13 mm | 63% | 4.2 m/s | 4.2 |
| 2000 ❄️ | 25.7°C | 20.3°C | 14.9°C | 28.2°C | 11.7°C | 6 mm | 58% | 4.9 m/s | 4.5 |
| 1999 | 27.8°C | 24.0°C | 20.2°C | 32.3°C | 13.5°C | 97 mm | 64% | 3.7 m/s | 3.5 |
| 1998 🔥 | 28.7°C | 24.8°C | 21.0°C | 35.0°C | 18.1°C | 39 mm | 66% | 4.2 m/s | 4 |
| 1997 | 25.3°C | 21.9°C | 18.5°C | 28.3°C | 12.9°C | 62 mm | 66% | 4.9 m/s | 3.6 |
| 1996 | 27.5°C | 22.8°C | 18.1°C | 31.9°C | 13.4°C | 13 mm | 60% | 4.2 m/s | 4.5 |
| 1995 | 25.4°C | 21.7°C | 17.9°C | 29.6°C | 14.5°C | 6 mm | 60% | 4.9 m/s | 4.1 |
| 1994 | 28.8°C | 24.0°C | 19.2°C | 34.6°C | 16.6°C | 15 mm | 55% | 4.2 m/s | 4.5 |
| 1993 | 25.3°C | 21.7°C | 18.0°C | 29.7°C | 12.6°C | 25 mm | 61% | 4.9 m/s | 4.2 |
| 1992 | 24.2°C | 20.8°C | 17.4°C | 26.6°C | 12.4°C | 52 mm | 67% | 4.3 m/s | 4.1 |
| 1991 | 27.4°C | 23.6°C | 19.7°C | 31.6°C | 16.7°C | 6 mm | 61% | 3.8 m/s | 4.2 |
| 1990 | 25.8°C | 22.0°C | 18.2°C | 30.8°C | 13.3°C | 12 mm | 62% | 5.4 m/s | 4.4 |
| 1989 | 27.7°C | 23.7°C | 19.7°C | 32.6°C | 16.3°C | 48 mm | 60% | 4.1 m/s | 4.3 |
| 1988 | 25.6°C | 22.2°C | 18.7°C | 30.1°C | 13.8°C | 16 mm | 60% | 4.3 m/s | 4.1 |
| 1987 | 25.4°C | 20.9°C | 16.4°C | 28.9°C | 13.4°C | 9 mm | 54% | 4.3 m/s | 3.8 |
| 1986 | 25.5°C | 21.4°C | 17.4°C | 29.3°C | 13.3°C | 8 mm | 55% | 4.8 m/s | 4.5 |
| 1985 | 26.8°C | 22.2°C | 17.5°C | 30.5°C | 14.2°C | 5 mm | 55% | 4.1 m/s | 4.3 |
| 1984 | 25.2°C | 21.9°C | 18.7°C | 30.8°C | 12.8°C | 95 mm | 67% | 4.2 m/s | 3.6 |
| 1983 | 28.5°C | 23.7°C | 18.8°C | 33.8°C | 14.7°C | 1 mm | 57% | 4.1 m/s | — |
| 1982 | 26.0°C | 22.3°C | 18.6°C | 29.6°C | 13.2°C | 14 mm | 63% | 5 m/s | — |
| 1981 | 27.5°C | 23.5°C | 19.5°C | 32.9°C | 16.1°C | 41 mm | 54% | 4.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 26.7°C with lows near 18.2°C (mean 22.5°C), based on 45 years of NASA POWER data.
May averages 23 mm of rainfall in Carnarvon, about average for rainfall. The wettest on record was 102 mm in 2005.
The hottest May reached 35.1°C in 2025. The coldest dipped to 10.8°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.4°C — but days and nights have moved in opposite directions. Daytime highs rose from 26.8°C to 27.7°C while overnight lows fell from 18.6°C to 18.5°C, widening the gap between day and night.
May is one of the cooler months of the year in Carnarvon and about average for rainfall, so plan for around 26.7°C daytime highs and 18.2°C at night.
Not quite — May is the 6th coolest month in Carnarvon, averaging 22.5°C.
For May in Carnarvon, pack light layers you can adjust through the day, with typical highs of 26.7°C and lows of 18.2°C.
Relative humidity in May averages 59% — moderately humid.
Average wind speed in May is 4.4 m/s. The windiest May on record averaged 5.4 m/s (1990).
The wettest May on record was 2005 with 102 mm. On average, May sees 23 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 Carnarvon 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.
