May is one of the warmer months of the year in Khulayş, with average highs near 40.2°C and lows around 26.8°C (mean 33.5°C). It is about average for rainfall, averaging 3 mm of rainfall and 34% relative humidity across the period.
May is one of the warmer months of the year in Khulayş. Across 45 years of records, the warmest May in Khulayş was 2003 — when the month averaged 35.7°C — while the coldest was 1986 at 30.8°C. Typical May days reach 40.2°C with nights near 26.8°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Khulayş, averaging 3 mm of rainfall. The wettest May on record was 1987 with 24 mm, while the driest were 2012, 2018 and 2022, among others at 0 mm.
Relative humidity in Khulayş during May averages 34%. The most humid May was 1987 at 41%, and the least humid was 2004 at 29%.
May receives about 7.2 kWh/m²/day of solar energy in Khulayş. The sunniest May was 2004 at 7.9 kWh/m²/day, and the cloudiest was 1987 at 6.2.
Average wind speed in Khulayş during May is 3.1 m/s. The windiest Mays were 1986 and 2009 at 3.7 m/s, while the calmest was 1996 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.9°C | 33.5°C | 33.5°C | 34.1°C | 33.6°C | +0.7°C |
| Avg High | 39.4°C | 40.1°C | 40.5°C | 40.8°C | 40.4°C | +1°C |
| Avg Low | 26.3°C | 27.0°C | 26.6°C | 27.4°C | 26.7°C | +0.4°C |
| Avg Rain | 5 mm | 1 mm | 2 mm | 3 mm | 9 mm | +4 mm |
May temperatures in Khulayş have risen by about 1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 18.2°C (2005) to a record high of 48.1°C (2003).
Rainfall in May is about average for rainfall, averaging 3 mm, with a wettest year of 24 mm.
A good time to visit Khulayş
May is a good time to visit Khulayş, with days averaging 40.2°C and nights around 26.8°C (mean 33.5°C, warmer than Khulayş's yearly average) and low rainfall. January and February 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 | 40.7°C | 33.7°C | 26.7°C | 46.9°C | 20.9°C | 3 mm | 34% | 3.4 m/s | 7.5 |
| 2024 | 39.7°C | 32.9°C | 26.0°C | 45.1°C | 21.3°C | 8 mm | 40% | 3.2 m/s | 7.7 |
| 2023 | 39.7°C | 33.1°C | 26.5°C | 43.7°C | 21.1°C | 15 mm | 36% | 2.9 m/s | 7.5 |
| 2022 | 42.4°C | 34.8°C | 27.2°C | 47.3°C | 21.5°C | 0 mm | 30% | 3.4 m/s | 7.6 |
| 2021 | 40.4°C | 33.8°C | 27.2°C | 45.4°C | 23.8°C | 8 mm | 38% | 2.8 m/s | 7.6 |
| 2020 | 39.7°C | 33.2°C | 26.7°C | 43.2°C | 21.9°C | 17 mm | 36% | 3.2 m/s | 7.2 |
| 2019 | 41.0°C | 34.6°C | 28.3°C | 44.7°C | 24.3°C | 8 mm | 34% | 2.8 m/s | 7.2 |
| 2018 | 41.5°C | 34.5°C | 27.5°C | 46.6°C | 21.9°C | 0 mm | 32% | 3.5 m/s | 7.5 |
| 2017 | 40.8°C | 34.6°C | 28.4°C | 47.9°C | 24.9°C | 5 mm | 35% | 3.2 m/s | 6.9 |
| 2016 | 41.1°C | 34.3°C | 27.5°C | 46.8°C | 24.2°C | 1 mm | 35% | 3.3 m/s | 7.7 |
| 2015 | 40.6°C | 34.3°C | 28.0°C | 43.1°C | 25.2°C | 9 mm | 35% | 3.1 m/s | 6.9 |
| 2014 | 39.5°C | 33.1°C | 26.7°C | 43.5°C | 21.8°C | 0 mm | 36% | 3.2 m/s | 7.2 |
| 2013 | 41.0°C | 34.1°C | 27.2°C | 46.6°C | 22.7°C | 2 mm | 35% | 3 m/s | 7.5 |
| 2012 | 41.4°C | 34.6°C | 27.7°C | 46.5°C | 25.1°C | 0 mm | 29% | 3.1 m/s | 7.5 |
| 2011 | 40.0°C | 33.0°C | 26.1°C | 43.7°C | 19.8°C | 0 mm | 33% | 3.4 m/s | 7.2 |
| 2010 | 40.7°C | 33.6°C | 26.6°C | 47.1°C | 21.7°C | 3 mm | 35% | 3.2 m/s | 7.6 |
| 2009 | 39.7°C | 32.9°C | 26.1°C | 43.4°C | 23.0°C | 7 mm | 35% | 3.7 m/s | 7.2 |
| 2008 | 39.8°C | 32.8°C | 25.9°C | 43.8°C | 20.8°C | 7 mm | 33% | 3.3 m/s | 7.4 |
| 2007 | 40.9°C | 34.3°C | 27.7°C | 44.3°C | 23.3°C | 0 mm | 32% | 3.3 m/s | 7.3 |
| 2006 | 40.0°C | 33.7°C | 27.5°C | 43.5°C | 22.2°C | 1 mm | 32% | 3.2 m/s | 7.1 |
| 2005 | 38.4°C | 31.6°C | 24.8°C | 44.2°C | 18.2°C | 1 mm | 39% | 3.1 m/s | 7.6 |
| 2004 | 42.1°C | 34.3°C | 26.5°C | 47.1°C | 20.8°C | 0 mm | 29% | 3.4 m/s | 7.9 |
| 2003 🔥 | 42.6°C | 35.7°C | 28.8°C | 48.1°C | 26.8°C | 2 mm | 30% | 3.1 m/s | 7.3 |
| 2002 | 39.4°C | 32.1°C | 24.8°C | 44.9°C | 19.8°C | 0 mm | 34% | 3.2 m/s | 7.8 |
| 2001 | 40.9°C | 33.7°C | 26.4°C | 47.0°C | 21.3°C | 0 mm | 31% | 3.2 m/s | 7.6 |
| 2000 | 40.7°C | 33.9°C | 27.1°C | 45.0°C | 23.3°C | 0 mm | 34% | 3.3 m/s | 7.3 |
| 1999 | 42.0°C | 35.0°C | 28.0°C | 46.7°C | 24.5°C | 0 mm | 32% | 3.2 m/s | 7.2 |
| 1998 | 39.8°C | 33.3°C | 26.9°C | 43.7°C | 21.8°C | 1 mm | 34% | 3.2 m/s | 7.2 |
| 1997 | 39.1°C | 32.9°C | 26.8°C | 42.0°C | 22.7°C | 0 mm | 31% | 3 m/s | 6.9 |
| 1996 | 40.8°C | 34.5°C | 28.3°C | 44.5°C | 25.5°C | 0 mm | 35% | 2.7 m/s | 6.8 |
| 1995 | 40.1°C | 33.5°C | 26.9°C | 43.6°C | 20.5°C | 0 mm | 34% | 3 m/s | 7 |
| 1994 | 40.1°C | 33.6°C | 27.2°C | 45.1°C | 21.9°C | 0 mm | 34% | 3.1 m/s | 6.8 |
| 1993 | 38.8°C | 32.6°C | 26.5°C | 42.1°C | 21.6°C | 1 mm | 37% | 3.2 m/s | 6.6 |
| 1992 | 38.9°C | 32.1°C | 25.3°C | 44.4°C | 19.5°C | 4 mm | 34% | 3.1 m/s | 7 |
| 1991 | 40.9°C | 34.3°C | 27.6°C | 45.2°C | 24.1°C | 3 mm | 38% | 3 m/s | 6.9 |
| 1990 | 40.8°C | 33.5°C | 26.1°C | 45.0°C | 20.5°C | 0 mm | 32% | 3.3 m/s | 7.5 |
| 1989 | 40.6°C | 33.9°C | 27.2°C | 43.9°C | 22.3°C | 1 mm | 35% | 3.1 m/s | 7.1 |
| 1988 | 41.6°C | 34.6°C | 27.7°C | 47.2°C | 23.6°C | 0 mm | 32% | 2.9 m/s | 6.4 |
| 1987 🌧️ | 38.7°C | 32.8°C | 26.9°C | 42.2°C | 22.9°C | 24 mm | 41% | 2.8 m/s | 6.2 |
| 1986 ❄️ | 37.4°C | 30.8°C | 24.1°C | 40.3°C | 20.1°C | 0 mm | 37% | 3.7 m/s | 6.8 |
| 1985 | 39.3°C | 32.9°C | 26.6°C | 42.3°C | 23.8°C | 15 mm | 38% | 2.9 m/s | 7 |
| 1984 | 39.9°C | 32.9°C | 25.9°C | 44.4°C | 21.6°C | 0 mm | 34% | 2.8 m/s | 7.1 |
| 1983 | 39.0°C | 32.7°C | 26.4°C | 41.8°C | 23.0°C | 0 mm | 37% | 3 m/s | — |
| 1982 | 38.7°C | 32.4°C | 26.1°C | 42.1°C | 23.0°C | 1 mm | 39% | 2.9 m/s | — |
| 1981 | 39.3°C | 32.7°C | 26.1°C | 44.1°C | 22.7°C | 4 mm | 36% | 3.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 40.2°C with lows near 26.8°C (mean 33.5°C), based on 45 years of NASA POWER data.
May averages 3 mm of rainfall in Khulayş, about average for rainfall. The wettest on record was 24 mm in 1987.
The hottest May reached 48.1°C in 2003. The coldest dipped to 18.2°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°C. Daytime highs moved from 39.2°C to 40.6°C and overnight lows from 26.2°C to 26.7°C over the same span.
May is one of the warmer months of the year in Khulayş and about average for rainfall, so plan for around 40.2°C daytime highs and 26.8°C at night.
Not quite — May is the 8th coolest month in Khulayş, averaging 33.5°C.
For May in Khulayş, pack light, breathable clothing and sun protection, with typical highs of 40.2°C and lows of 26.8°C.
Relative humidity in May averages 34% — relatively dry.
Average wind speed in May is 3.1 m/s. The windiest May on record averaged 3.7 m/s (1986).
The wettest May on record was 1987 with 24 mm. On average, May sees 3 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 Khulayş 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.
