May is one of the cooler months of the year in Ceduna, with average highs near 21.3°C and lows around 10.6°C (mean 16°C). It is about average for rainfall, averaging 24 mm of rainfall and 63% relative humidity across the period.
May is one of the cooler months of the year in Ceduna. Across 45 years of records, the warmest May in Ceduna was 2013 — when the month averaged 17.9°C — while the coldest was 2006 at 14.2°C. Typical May days reach 21.3°C with nights near 10.6°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Ceduna, averaging 24 mm of rainfall. The wettest May on record was 2014 with 78 mm, while the driest was 2024 at 3 mm.
Relative humidity in Ceduna during May averages 63%. The most humid May was 2009 at 74%, and the least humid was 1985 at 54%.
May receives about 3.2 kWh/m²/day of solar energy in Ceduna. The sunniest Mays were 2024 and 2025 at 3.7 kWh/m²/day, and the cloudiest was 1997 at 2.7.
Average wind speed in Ceduna during May is 3.1 m/s. The windiest Mays were 1981 and 1988 at 3.7 m/s, while the calmest was 2009 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.7°C | 16.2°C | 16.0°C | 16.1°C | 15.6°C | -0.1°C |
| Avg High | 21.0°C | 21.6°C | 21.4°C | 21.2°C | 21.3°C | +0.3°C |
| Avg Low | 10.4°C | 10.8°C | 10.5°C | 10.9°C | 10.0°C | -0.4°C |
| Avg Rain | 24 mm | 26 mm | 22 mm | 29 mm | 14 mm | -10 mm |
May temperatures in Ceduna have stayed relatively stable across the record.
May has ranged from a record low of 4.3°C (1985) to a record high of 32.8°C (2005).
Rainfall in May is about average for rainfall, averaging 24 mm, with a wettest year of 78 mm.
A quieter season to visit Ceduna
If your dates are flexible, the more temperate months of March and December tend to be the most comfortable for visiting Ceduna. That said, May — with days averaging 21.3°C and nights around 10.6°C (mean 16°C) and low rainfall (24 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 22.3°C | 16.2°C | 10.0°C | 29.4°C | 4.7°C | 4 mm | 58% | 3 m/s | 3.7 |
| 2024 | 23.2°C | 16.3°C | 9.4°C | 26.6°C | 6.2°C | 3 mm | 55% | 2.8 m/s | 3.7 |
| 2023 | 20.2°C | 15.2°C | 10.2°C | 24.4°C | 5.4°C | 14 mm | 71% | 2.7 m/s | 3.2 |
| 2022 | 20.8°C | 15.5°C | 10.2°C | 25.6°C | 6.7°C | 38 mm | 66% | 3.1 m/s | 3.4 |
| 2021 | 21.4°C | 16.0°C | 10.5°C | 28.3°C | 5.0°C | 14 mm | 56% | 3.2 m/s | 3 |
| 2020 | 19.7°C | 14.6°C | 9.4°C | 27.0°C | 5.6°C | 12 mm | 62% | 3.4 m/s | 3.2 |
| 2019 | 20.9°C | 15.6°C | 10.3°C | 29.4°C | 4.9°C | 9 mm | 62% | 3.3 m/s | 3.2 |
| 2018 | 21.2°C | 15.9°C | 10.6°C | 28.9°C | 5.2°C | 5 mm | 64% | 3.2 m/s | 3.1 |
| 2017 | 21.6°C | 15.7°C | 9.9°C | 26.5°C | 5.3°C | 11 mm | 58% | 2.9 m/s | 3.4 |
| 2016 | 21.9°C | 16.8°C | 11.7°C | 29.0°C | 8.5°C | 18 mm | 65% | 3.6 m/s | 3.2 |
| 2015 | 19.7°C | 14.9°C | 10.1°C | 26.7°C | 5.8°C | 22 mm | 69% | 3.1 m/s | 2.9 |
| 2014 🌧️ | 22.4°C | 17.7°C | 13.0°C | 28.0°C | 8.6°C | 78 mm | 70% | 2.9 m/s | 3.1 |
| 2013 🔥 | 23.0°C | 17.9°C | 12.9°C | 32.8°C | 6.8°C | 43 mm | 62% | 3.4 m/s | 2.9 |
| 2012 | 20.7°C | 15.3°C | 9.8°C | 28.9°C | 5.5°C | 24 mm | 65% | 3.1 m/s | 3.1 |
| 2011 | 19.2°C | 14.5°C | 9.8°C | 24.0°C | 5.1°C | 30 mm | 71% | 3 m/s | 2.9 |
| 2010 | 21.5°C | 16.4°C | 11.2°C | 29.4°C | 7.0°C | 48 mm | 62% | 3.4 m/s | 3.1 |
| 2009 | 20.1°C | 14.9°C | 9.7°C | 24.0°C | 4.7°C | 17 mm | 74% | 2.5 m/s | 3.2 |
| 2008 | 22.0°C | 16.3°C | 10.7°C | 27.6°C | 7.1°C | 17 mm | 62% | 2.8 m/s | 3.5 |
| 2007 | 21.6°C | 16.2°C | 10.8°C | 28.1°C | 6.7°C | 31 mm | 67% | 3.5 m/s | 3.1 |
| 2006 ❄️ | 19.8°C | 14.2°C | 8.7°C | 24.0°C | 4.4°C | 27 mm | 69% | 2.9 m/s | 3.2 |
| 2005 | 22.9°C | 17.6°C | 12.2°C | 32.8°C | 6.2°C | 8 mm | 59% | 3 m/s | 2.9 |
| 2004 | 20.9°C | 15.4°C | 9.8°C | 26.3°C | 5.5°C | 13 mm | 65% | 2.9 m/s | 3.2 |
| 2003 | 22.1°C | 16.2°C | 10.3°C | 29.4°C | 4.4°C | 12 mm | 62% | 3.4 m/s | 3.4 |
| 2002 | 23.5°C | 17.7°C | 11.9°C | 31.2°C | 6.8°C | 24 mm | 57% | 3.3 m/s | 3.3 |
| 2001 | 21.0°C | 15.9°C | 10.7°C | 28.5°C | 5.1°C | 46 mm | 63% | 3.1 m/s | 3 |
| 2000 | 19.9°C | 15.1°C | 10.3°C | 29.5°C | 6.3°C | 23 mm | 69% | 3.1 m/s | 3.2 |
| 1999 | 22.6°C | 17.2°C | 11.7°C | 29.2°C | 6.7°C | 17 mm | 57% | 3 m/s | 2.9 |
| 1998 | 22.5°C | 17.0°C | 11.4°C | 28.7°C | 7.1°C | 17 mm | 63% | 3 m/s | 3 |
| 1997 | 20.2°C | 15.5°C | 10.8°C | 29.4°C | 5.4°C | 57 mm | 68% | 2.9 m/s | 2.7 |
| 1996 | 22.1°C | 15.9°C | 9.8°C | 31.0°C | 5.8°C | 11 mm | 63% | 2.7 m/s | 3.3 |
| 1995 | 19.8°C | 14.8°C | 9.9°C | 27.7°C | 5.7°C | 34 mm | 63% | 3.4 m/s | 3.3 |
| 1994 | 22.6°C | 16.8°C | 11.1°C | 29.4°C | 6.9°C | 14 mm | 58% | 3.5 m/s | 3.5 |
| 1993 | 21.6°C | 16.3°C | 10.9°C | 29.8°C | 6.2°C | 20 mm | 61% | 2.9 m/s | 3.3 |
| 1992 | 20.2°C | 15.2°C | 10.2°C | 29.2°C | 4.8°C | 32 mm | 67% | 3.1 m/s | 3.2 |
| 1991 | 21.3°C | 15.7°C | 10.1°C | 25.8°C | 5.8°C | 25 mm | 60% | 3.1 m/s | 2.9 |
| 1990 | 22.7°C | 17.3°C | 12.0°C | 31.8°C | 7.2°C | 36 mm | 61% | 3.5 m/s | 3.2 |
| 1989 | 20.6°C | 15.7°C | 10.8°C | 25.3°C | 7.7°C | 39 mm | 70% | 3.1 m/s | 3 |
| 1988 | 21.9°C | 16.9°C | 11.9°C | 29.4°C | 6.4°C | 27 mm | 64% | 3.7 m/s | 3.1 |
| 1987 | 19.7°C | 14.9°C | 10.2°C | 25.3°C | 4.5°C | 30 mm | 66% | 3.3 m/s | 2.9 |
| 1986 | 21.4°C | 15.8°C | 10.2°C | 27.3°C | 5.3°C | 22 mm | 65% | 3 m/s | 3.3 |
| 1985 | 20.9°C | 15.0°C | 9.2°C | 29.2°C | 4.3°C | 13 mm | 54% | 2.7 m/s | 3.3 |
| 1984 | 21.8°C | 16.0°C | 10.3°C | 28.2°C | 5.7°C | 17 mm | 61% | 3.4 m/s | 3.2 |
| 1983 | 20.7°C | 15.3°C | 9.9°C | 25.8°C | 6.7°C | 21 mm | 72% | 3.2 m/s | — |
| 1982 | 21.2°C | 15.9°C | 10.6°C | 27.1°C | 6.3°C | 23 mm | 63% | 3.1 m/s | — |
| 1981 | 21.0°C | 15.6°C | 10.1°C | 31.0°C | 5.7°C | 23 mm | 60% | 3.7 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 21.3°C with lows near 10.6°C (mean 16°C), based on 45 years of NASA POWER data.
May averages 24 mm of rainfall in Ceduna, about average for rainfall. The wettest on record was 78 mm in 2014.
The hottest May reached 32.8°C in 2005. The coldest dipped to 4.3°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.2°C. Daytime highs moved from 21.1°C to 21.6°C and overnight lows from 10°C to 10.1°C over the same span.
May is one of the cooler months of the year in Ceduna and about average for rainfall, so plan for around 21.3°C daytime highs and 10.6°C at night.
Not quite — May is the 4th coolest month in Ceduna, averaging 16°C.
For May in Ceduna, pack light layers you can adjust through the day, with typical highs of 21.3°C and lows of 10.6°C.
Relative humidity in May averages 63% — moderately humid.
Average wind speed in May is 3.1 m/s. The windiest May on record averaged 3.7 m/s (1981).
The wettest May on record was 2014 with 78 mm. On average, May sees 24 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 Ceduna 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.
