May is one of the warmer months of the year in Ḩā’il, with average highs near 35.7°C and lows around 18.9°C (mean 27.3°C). It is about average for rainfall, averaging 1 mm of rainfall and 20% relative humidity across the period.
May is one of the warmer months of the year in Ḩā’il. Across 45 years of records, the warmest May in Ḩā’il was 2021 — when the month averaged 29.2°C — while the coldest were 1981, 1986 and 1993 at 25.5°C. Typical May days reach 35.7°C with nights near 18.9°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Ḩā’il, averaging 1 mm of rainfall. The wettest May on record was 1995 with 14 mm, while the driest were 2021, 2022 and 2023, among others at 0 mm.
Relative humidity in Ḩā’il during May averages 20%. The most humid May was 1982 at 34%, and the least humid were 1990 and 2012 at 15%.
May receives about 7.4 kWh/m²/day of solar energy in Ḩā’il. The sunniest Mays were 1998 and 2004 at 8.2 kWh/m²/day, and the cloudiest was 1987 at 5.9.
Average wind speed in Ḩā’il during May is 3 m/s. The windiest Mays were 1982 and 1983 at 3.4 m/s, while the calmest was 1998 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.8°C | 27.0°C | 27.5°C | 27.8°C | 27.4°C | +0.6°C |
| Avg High | 35.2°C | 35.3°C | 35.9°C | 36.2°C | 36.0°C | +0.8°C |
| Avg Low | 18.4°C | 18.7°C | 18.9°C | 19.5°C | 18.8°C | +0.4°C |
| Avg Rain | 2 mm | 2 mm | 0 mm | 1 mm | 1 mm | -1 mm |
May temperatures in Ḩā’il have risen by about 0.9°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 8.9°C (1981) to a record high of 42.7°C (1991).
Rainfall in May is about average for rainfall, averaging 1 mm, with a wettest year of 14 mm.
One of the best times to visit Ḩā’il
May is one of the best times to visit Ḩā’il. Expect days averaging 35.7°C and nights around 18.9°C (mean 27.3°C) — warmer than Ḩā’il's yearly average — with low rainfall (1 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 | 36.5°C | 27.7°C | 18.8°C | 42.6°C | 12.3°C | 2 mm | 19% | 3.1 m/s | 8 |
| 2024 | 35.5°C | 26.8°C | 18.1°C | 42.0°C | 12.1°C | 3 mm | 23% | 3.1 m/s | 8.1 |
| 2023 | 34.5°C | 26.0°C | 17.4°C | 39.9°C | 10.2°C | 0 mm | 27% | 2.8 m/s | 7.6 |
| 2022 | 35.7°C | 26.7°C | 17.8°C | 40.8°C | 11.5°C | 0 mm | 18% | 3 m/s | 7.9 |
| 2021 🔥 | 37.5°C | 29.2°C | 20.9°C | 41.3°C | 15.3°C | 0 mm | 16% | 2.9 m/s | 7.9 |
| 2020 | 36.2°C | 28.0°C | 19.8°C | 40.7°C | 13.8°C | 0 mm | 18% | 3.1 m/s | 7.6 |
| 2019 | 36.6°C | 28.3°C | 20.0°C | 41.2°C | 12.3°C | 0 mm | 20% | 2.7 m/s | 7.6 |
| 2018 | 35.6°C | 27.4°C | 19.3°C | 40.6°C | 13.9°C | 1 mm | 23% | 3.1 m/s | 7.2 |
| 2017 | 36.7°C | 28.5°C | 20.3°C | 40.5°C | 14.8°C | 0 mm | 18% | 2.9 m/s | 7.3 |
| 2016 | 36.8°C | 28.1°C | 19.4°C | 41.4°C | 15.8°C | 0 mm | 17% | 2.8 m/s | 8.1 |
| 2015 | 36.7°C | 28.6°C | 20.6°C | 41.7°C | 17.0°C | 0 mm | 17% | 3.1 m/s | 7.3 |
| 2014 | 35.0°C | 27.2°C | 19.4°C | 41.7°C | 14.6°C | 0 mm | 21% | 2.8 m/s | 7.3 |
| 2013 | 34.2°C | 25.9°C | 17.6°C | 41.0°C | 13.3°C | 0 mm | 24% | 2.9 m/s | 7.7 |
| 2012 | 37.1°C | 28.5°C | 19.8°C | 40.9°C | 17.3°C | 0 mm | 15% | 3.2 m/s | 7.6 |
| 2011 | 36.2°C | 27.4°C | 18.5°C | 41.0°C | 11.9°C | 0 mm | 19% | 2.9 m/s | 7.6 |
| 2010 | 36.7°C | 28.2°C | 19.8°C | 41.3°C | 11.9°C | 3 mm | 19% | 3 m/s | 7.6 |
| 2009 | 35.6°C | 27.5°C | 19.5°C | 40.7°C | 13.6°C | 1 mm | 24% | 3.2 m/s | 7 |
| 2008 | 36.0°C | 27.5°C | 18.9°C | 41.0°C | 13.7°C | 0 mm | 17% | 3.1 m/s | 7.5 |
| 2007 | 36.6°C | 28.5°C | 20.4°C | 41.3°C | 15.1°C | 0 mm | 18% | 3.1 m/s | 7.3 |
| 2006 | 36.0°C | 28.0°C | 19.9°C | 40.9°C | 15.2°C | 0 mm | 22% | 3 m/s | 7.4 |
| 2005 | 34.9°C | 26.5°C | 18.0°C | 38.8°C | 11.2°C | 0 mm | 16% | 2.9 m/s | 7.8 |
| 2004 | 36.0°C | 27.0°C | 18.0°C | 41.0°C | 13.5°C | 0 mm | 15% | 2.9 m/s | 8.2 |
| 2003 | 36.3°C | 27.9°C | 19.4°C | 40.3°C | 16.0°C | 1 mm | 19% | 3.3 m/s | 7.4 |
| 2002 | 36.6°C | 27.3°C | 17.9°C | 41.1°C | 11.9°C | 0 mm | 16% | 2.8 m/s | 8.1 |
| 2001 | 35.0°C | 26.9°C | 18.7°C | 39.2°C | 12.6°C | 0 mm | 17% | 3.1 m/s | 7.5 |
| 2000 | 36.3°C | 27.4°C | 18.6°C | 41.7°C | 14.0°C | 1 mm | 17% | 2.9 m/s | 7.7 |
| 1999 | 37.0°C | 28.6°C | 20.1°C | 42.1°C | 16.5°C | 0 mm | 16% | 2.9 m/s | 7.7 |
| 1998 | 35.7°C | 27.0°C | 18.3°C | 41.7°C | 12.8°C | 2 mm | 21% | 2.6 m/s | 8.2 |
| 1997 | 33.5°C | 26.0°C | 18.5°C | 38.7°C | 10.6°C | 0 mm | 20% | 2.7 m/s | 7.8 |
| 1996 | 36.1°C | 28.3°C | 20.5°C | 40.5°C | 15.5°C | 0 mm | 17% | 2.7 m/s | 7.2 |
| 1995 🌧️ | 35.1°C | 26.9°C | 18.8°C | 39.2°C | 10.2°C | 14 mm | 23% | 2.8 m/s | 6.9 |
| 1994 | 35.2°C | 27.1°C | 19.0°C | 41.0°C | 12.2°C | 0 mm | 22% | 3 m/s | 7.3 |
| 1993 | 33.4°C | 25.5°C | 17.7°C | 38.6°C | 10.5°C | 3 mm | 25% | 2.9 m/s | 6.9 |
| 1992 | 34.1°C | 25.7°C | 17.3°C | 39.1°C | 12.5°C | 0 mm | 18% | 3.2 m/s | 7.1 |
| 1991 | 35.6°C | 26.8°C | 18.1°C | 42.7°C | 13.1°C | 0 mm | 17% | 2.8 m/s | 7.1 |
| 1990 | 37.0°C | 27.7°C | 18.4°C | 41.4°C | 12.5°C | 0 mm | 15% | 2.7 m/s | 7.8 |
| 1989 | 35.2°C | 27.9°C | 20.6°C | 39.7°C | 17.5°C | 0 mm | 21% | 2.7 m/s | 6.5 |
| 1988 | 36.1°C | 27.5°C | 18.9°C | 41.1°C | 14.6°C | 0 mm | 16% | 3 m/s | 6.7 |
| 1987 | 36.2°C | 28.3°C | 20.4°C | 39.5°C | 16.0°C | 0 mm | 22% | 2.9 m/s | 5.9 |
| 1986 | 34.3°C | 25.5°C | 16.7°C | 40.6°C | 10.8°C | 3 mm | 19% | 3.3 m/s | 6.6 |
| 1985 | 35.7°C | 27.1°C | 18.5°C | 39.4°C | 15.2°C | 3 mm | 22% | 2.8 m/s | 7.1 |
| 1984 | 35.1°C | 26.2°C | 17.3°C | 41.7°C | 12.5°C | 0 mm | 15% | 3 m/s | 6.8 |
| 1983 | 35.6°C | 26.9°C | 18.1°C | 40.0°C | 14.0°C | 4 mm | 25% | 3.4 m/s | — |
| 1982 | 33.9°C | 26.1°C | 18.3°C | 38.8°C | 13.0°C | 3 mm | 34% | 3.4 m/s | — |
| 1981 ❄️ | 34.7°C | 25.5°C | 16.4°C | 40.0°C | 8.9°C | 0 mm | 24% | 3.1 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 35.7°C with lows near 18.9°C (mean 27.3°C), based on 45 years of NASA POWER data.
May averages 1 mm of rainfall in Ḩā’il, about average for rainfall. The wettest on record was 14 mm in 1995.
The hottest May reached 42.7°C in 1991. The coldest dipped to 8.9°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.9°C. Daytime highs moved from 35°C to 35.9°C and overnight lows from 17.7°C to 18.6°C over the same span.
May is one of the warmer months of the year in Ḩā’il and about average for rainfall, so plan for around 35.7°C daytime highs and 18.9°C at night.
Not quite — May is the 8th coolest month in Ḩā’il, averaging 27.3°C.
For May in Ḩā’il, pack light, breathable clothing and sun protection, with typical highs of 35.7°C and lows of 18.9°C.
Relative humidity in May averages 20% — relatively dry.
Average wind speed in May is 3 m/s. The windiest May on record averaged 3.4 m/s (1982).
The wettest May on record was 1995 with 14 mm. On average, May sees 1 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 Ḩā’il 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.
