May is one of the warmer months of the year in Al Kharj, with average highs near 40.7°C and lows around 24.6°C (mean 32.7°C). It is about average for rainfall, averaging 2 mm of rainfall and 17% relative humidity across the period.
May is one of the warmer months of the year in Al Kharj. Across 45 years of records, the warmest May in Al Kharj was 2012 — when the month averaged 34.1°C — while the coldest was 1982 at 30.9°C. Typical May days reach 40.7°C with nights near 24.6°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Al Kharj, averaging 2 mm of rainfall. The wettest May on record was 1981 with 24 mm, while the driest were 2021, 2022 and 2025, among others at 0 mm.
Relative humidity in Al Kharj during May averages 17%. The most humid May was 1982 at 25%, and the least humid was 1999 at 12%.
May receives about 7.3 kWh/m²/day of solar energy in Al Kharj. The sunniest May was 1999 at 8 kWh/m²/day, and the cloudiest was 1987 at 6.4.
Average wind speed in Al Kharj during May is 2.8 m/s. The windiest May was 1992 at 3.4 m/s, while the calmest was 2021 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.1°C | 32.5°C | 33.1°C | 32.9°C | 32.8°C | +0.7°C |
| Avg High | 40.1°C | 40.5°C | 41.4°C | 40.7°C | 40.9°C | +0.8°C |
| Avg Low | 24.0°C | 24.5°C | 24.8°C | 25.1°C | 24.7°C | +0.7°C |
| Avg Rain | 4 mm | 1 mm | 0 mm | 2 mm | 3 mm | -1 mm |
May temperatures in Al Kharj have risen by about 1.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 15.9°C (2005) to a record high of 46.5°C (1998).
Rainfall in May is about average for rainfall, averaging 2 mm, with a wettest year of 24 mm.
A good time to visit Al Kharj
May is a good time to visit Al Kharj, with days averaging 40.7°C and nights around 24.6°C (mean 32.7°C, warmer than Al Kharj's yearly average) and low rainfall. November and March 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 | 42.1°C | 33.8°C | 25.5°C | 46.1°C | 20.7°C | 0 mm | 13% | 2.9 m/s | 7.6 |
| 2024 | 40.7°C | 32.6°C | 24.5°C | 45.7°C | 19.4°C | 14 mm | 24% | 3.1 m/s | 7.4 |
| 2023 | 39.7°C | 32.2°C | 24.6°C | 43.1°C | 18.9°C | 3 mm | 21% | 2.9 m/s | 6.9 |
| 2022 | 40.7°C | 32.1°C | 23.5°C | 44.7°C | 20.2°C | 0 mm | 13% | 2.8 m/s | 7.3 |
| 2021 | 41.9°C | 33.6°C | 25.4°C | 45.3°C | 20.4°C | 0 mm | 12% | 2.2 m/s | 7.8 |
| 2020 | 40.3°C | 32.4°C | 24.5°C | 44.1°C | 20.5°C | 0 mm | 17% | 2.8 m/s | 7.4 |
| 2019 | 39.8°C | 32.6°C | 25.4°C | 44.1°C | 20.1°C | 1 mm | 21% | 2.3 m/s | 6.7 |
| 2018 | 40.4°C | 32.3°C | 24.1°C | 43.5°C | 20.6°C | 0 mm | 17% | 3 m/s | 7.4 |
| 2017 | 41.5°C | 34.0°C | 26.5°C | 45.1°C | 24.4°C | 0 mm | 18% | 2.8 m/s | 7.2 |
| 2016 | 41.1°C | 33.0°C | 25.0°C | 45.6°C | 20.1°C | 0 mm | 17% | 2.9 m/s | 7.5 |
| 2015 | 41.3°C | 33.6°C | 25.9°C | 44.5°C | 23.7°C | 0 mm | 17% | 3 m/s | 7.2 |
| 2014 | 40.7°C | 32.7°C | 24.6°C | 45.2°C | 19.8°C | 0 mm | 14% | 2.7 m/s | 7.5 |
| 2013 | 39.0°C | 31.1°C | 23.3°C | 43.1°C | 17.9°C | 0 mm | 24% | 2.8 m/s | 7.4 |
| 2012 🔥 | 42.2°C | 34.1°C | 26.1°C | 45.1°C | 23.6°C | 0 mm | 13% | 3.1 m/s | 7.6 |
| 2011 | 40.8°C | 33.0°C | 25.3°C | 44.1°C | 19.4°C | 3 mm | 19% | 2.8 m/s | 7.4 |
| 2010 | 40.4°C | 32.7°C | 25.0°C | 44.2°C | 21.0°C | 10 mm | 20% | 2.7 m/s | 7.2 |
| 2009 | 41.9°C | 33.5°C | 25.0°C | 45.8°C | 20.5°C | 0 mm | 14% | 2.8 m/s | 7.5 |
| 2008 | 41.3°C | 33.3°C | 25.4°C | 44.0°C | 21.2°C | 0 mm | 16% | 3 m/s | 7.5 |
| 2007 | 41.3°C | 33.5°C | 25.7°C | 44.4°C | 23.1°C | 0 mm | 15% | 2.5 m/s | 7.6 |
| 2006 | 41.5°C | 33.8°C | 26.1°C | 44.1°C | 22.2°C | 0 mm | 15% | 2.5 m/s | 7.3 |
| 2005 | 40.1°C | 32.0°C | 23.9°C | 43.7°C | 15.9°C | 0 mm | 15% | 2.6 m/s | 7.4 |
| 2004 | 40.7°C | 32.1°C | 23.5°C | 45.5°C | 19.4°C | 0 mm | 14% | 2.9 m/s | 7.9 |
| 2003 | 41.3°C | 33.0°C | 24.7°C | 43.9°C | 18.4°C | 0 mm | 13% | 3 m/s | 7.3 |
| 2002 | 42.3°C | 33.4°C | 24.5°C | 45.6°C | 19.7°C | 0 mm | 12% | 2.9 m/s | 7.9 |
| 2001 | 41.9°C | 33.1°C | 24.4°C | 44.4°C | 20.5°C | 0 mm | 12% | 3 m/s | 7.9 |
| 2000 | 41.7°C | 33.2°C | 24.8°C | 45.0°C | 20.6°C | 3 mm | 14% | 2.6 m/s | 7.7 |
| 1999 | 41.9°C | 33.3°C | 24.8°C | 44.9°C | 22.7°C | 0 mm | 12% | 2.8 m/s | 8 |
| 1998 | 41.3°C | 33.3°C | 25.3°C | 46.5°C | 19.7°C | 0 mm | 17% | 2.5 m/s | 7.9 |
| 1997 | 39.5°C | 32.1°C | 24.8°C | 44.8°C | 20.7°C | 0 mm | 19% | 2.7 m/s | 7.1 |
| 1996 | 41.0°C | 33.0°C | 25.0°C | 43.8°C | 20.5°C | 0 mm | 16% | 2.5 m/s | 7.2 |
| 1995 | 39.7°C | 31.6°C | 23.6°C | 42.5°C | 20.2°C | 0 mm | 16% | 2.6 m/s | 7.2 |
| 1994 | 40.6°C | 33.0°C | 25.4°C | 45.3°C | 21.3°C | 1 mm | 17% | 2.8 m/s | 7.3 |
| 1993 | 39.0°C | 31.4°C | 23.8°C | 43.1°C | 19.0°C | 12 mm | 23% | 3.1 m/s | 7.1 |
| 1992 | 40.2°C | 32.3°C | 24.4°C | 43.8°C | 19.8°C | 0 mm | 18% | 3.4 m/s | 7.5 |
| 1991 | 40.0°C | 31.7°C | 23.5°C | 45.6°C | 19.2°C | 0 mm | 13% | 2.6 m/s | 6.6 |
| 1990 | 41.4°C | 33.0°C | 24.6°C | 45.1°C | 17.7°C | 0 mm | 13% | 2.4 m/s | 7.6 |
| 1989 | 40.5°C | 32.2°C | 24.0°C | 43.9°C | 20.2°C | 0 mm | 14% | 2.8 m/s | 7.8 |
| 1988 | 41.3°C | 32.6°C | 23.8°C | 43.9°C | 21.1°C | 0 mm | 13% | 2.7 m/s | 6.8 |
| 1987 | 41.3°C | 33.4°C | 25.6°C | 43.1°C | 21.8°C | 0 mm | 18% | 2.6 m/s | 6.4 |
| 1986 | 41.0°C | 32.5°C | 24.0°C | 44.9°C | 18.9°C | 5 mm | 18% | 3.2 m/s | 6.9 |
| 1985 | 39.9°C | 32.4°C | 24.9°C | 43.2°C | 20.4°C | 1 mm | 19% | 2.4 m/s | 6.7 |
| 1984 | 39.3°C | 31.0°C | 22.8°C | 44.0°C | 17.7°C | 0 mm | 19% | 2.8 m/s | 6.7 |
| 1983 | 39.6°C | 32.1°C | 24.5°C | 43.0°C | 19.1°C | 9 mm | 24% | 2.8 m/s | — |
| 1982 ❄️ | 38.8°C | 30.9°C | 23.0°C | 42.5°C | 18.9°C | 0 mm | 25% | 2.6 m/s | — |
| 1981 🌧️ | 39.6°C | 31.4°C | 23.2°C | 44.8°C | 17.2°C | 24 mm | 20% | 2.6 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 40.7°C with lows near 24.6°C (mean 32.7°C), based on 45 years of NASA POWER data.
May averages 2 mm of rainfall in Al Kharj, about average for rainfall. The wettest on record was 24 mm in 1981.
The hottest May reached 46.5°C in 1998. The coldest dipped to 15.9°C in 2005.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.3°C. Daytime highs moved from 39.4°C to 41°C and overnight lows from 23.7°C to 24.7°C over the same span.
May is one of the warmer months of the year in Al Kharj and about average for rainfall, so plan for around 40.7°C daytime highs and 24.6°C at night.
Not quite — May is the 8th coolest month in Al Kharj, averaging 32.7°C.
For May in Al Kharj, pack light, breathable clothing and sun protection, with typical highs of 40.7°C and lows of 24.6°C.
Relative humidity in May averages 17% — relatively dry.
Average wind speed in May is 2.8 m/s. The windiest May on record averaged 3.4 m/s (1992).
The wettest May on record was 1981 with 24 mm. On average, May sees 2 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 Al Kharj 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.
