May is one of the warmer months of the year in Qal‘at Bīshah, with average highs near 36.4°C and lows around 21.4°C (mean 28.9°C). It is about average for rainfall, averaging 9 mm of rainfall and 27% relative humidity across the period.
May is one of the warmer months of the year in Qal‘at Bīshah. Across 45 years of records, the warmest Mays in Qal‘at Bīshah were 2007, 2012 and 2025 — when the month averaged 30°C — while the coldest was 1985 at 26.4°C. Typical May days reach 36.4°C with nights near 21.4°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Qal‘at Bīshah, averaging 9 mm of rainfall. The wettest May on record was 1987 with 62 mm, while the driest were 2001, 2002 and 2004, among others at 0 mm.
Relative humidity in Qal‘at Bīshah during May averages 27%. The most humid May was 2023 at 44%, and the least humid was 2004 at 16%.
May receives about 7.1 kWh/m²/day of solar energy in Qal‘at Bīshah. The sunniest Mays were 1999, 2002 and 2004 at 7.9 kWh/m²/day, and the cloudiest were 1985 and 1987 at 6.3.
Average wind speed in Qal‘at Bīshah during May is 2.8 m/s. The windiest May was 2001 at 3.3 m/s, while the calmest was 1985 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.0°C | 28.7°C | 29.4°C | 29.2°C | 29.2°C | +1.2°C |
| Avg High | 35.4°C | 36.2°C | 37.3°C | 36.6°C | 36.6°C | +1.2°C |
| Avg Low | 20.7°C | 21.3°C | 21.5°C | 21.9°C | 21.7°C | +1°C |
| Avg Rain | 15 mm | 9 mm | 1 mm | 6 mm | 18 mm | +3 mm |
May temperatures in Qal‘at Bīshah have risen by about 1.2°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 14.5°C (2005) to a record high of 41.3°C (2024).
Rainfall in May is about average for rainfall, averaging 9 mm, with a wettest year of 62 mm.
A good time to visit Qal‘at Bīshah
May is a good time to visit Qal‘at Bīshah, with days averaging 36.4°C and nights around 21.4°C (mean 28.9°C, warmer than Qal‘at Bīshah'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 | 37.9°C | 30.0°C | 22.0°C | 40.8°C | 19.9°C | 10 mm | 22% | 2.9 m/s | 7.2 |
| 2024 | 36.9°C | 29.5°C | 22.0°C | 41.3°C | 16.2°C | 12 mm | 31% | 3 m/s | 7.3 |
| 2023 | 34.0°C | 27.5°C | 20.9°C | 37.9°C | 17.4°C | 61 mm | 44% | 2.5 m/s | 6.9 |
| 2022 | 37.8°C | 29.6°C | 21.5°C | 39.7°C | 18.0°C | 3 mm | 20% | 2.8 m/s | 7.4 |
| 2021 | 37.0°C | 29.5°C | 21.9°C | 40.2°C | 18.5°C | 4 mm | 22% | 3 m/s | 7.2 |
| 2020 | 36.1°C | 28.9°C | 21.8°C | 39.2°C | 18.1°C | 16 mm | 33% | 2.7 m/s | 7 |
| 2019 | 35.3°C | 28.6°C | 21.9°C | 38.5°C | 20.2°C | 8 mm | 30% | 2.4 m/s | 6.6 |
| 2018 | 37.2°C | 29.4°C | 21.7°C | 38.6°C | 19.6°C | 1 mm | 22% | 2.9 m/s | 7.5 |
| 2017 | 36.3°C | 29.5°C | 22.8°C | 39.9°C | 17.5°C | 1 mm | 31% | 2.7 m/s | 6.8 |
| 2016 | 36.6°C | 29.6°C | 22.5°C | 39.3°C | 18.3°C | 1 mm | 26% | 2.6 m/s | 7.2 |
| 2015 | 37.2°C | 29.8°C | 22.5°C | 40.4°C | 18.8°C | 5 mm | 25% | 2.9 m/s | 7.3 |
| 2014 | 36.8°C | 29.1°C | 21.4°C | 39.6°C | 17.3°C | 4 mm | 26% | 2.9 m/s | 7.4 |
| 2013 | 34.8°C | 27.4°C | 20.0°C | 38.1°C | 15.5°C | 32 mm | 35% | 2.6 m/s | 7 |
| 2012 | 37.7°C | 30.0°C | 22.3°C | 39.7°C | 20.5°C | 1 mm | 23% | 2.7 m/s | 7.5 |
| 2011 | 36.8°C | 29.3°C | 21.8°C | 38.3°C | 17.3°C | 2 mm | 26% | 2.6 m/s | 7.3 |
| 2010 | 36.9°C | 29.2°C | 21.6°C | 40.0°C | 17.6°C | 4 mm | 25% | 3 m/s | 7.4 |
| 2009 | 38.1°C | 29.8°C | 21.5°C | 40.0°C | 19.9°C | 0 mm | 20% | 2.9 m/s | 7.6 |
| 2008 | 37.3°C | 29.6°C | 21.8°C | 39.9°C | 18.4°C | 1 mm | 25% | 2.8 m/s | 7 |
| 2007 🔥 | 37.5°C | 30.0°C | 22.5°C | 38.8°C | 19.8°C | 0 mm | 21% | 2.6 m/s | 7.3 |
| 2006 | 37.0°C | 29.6°C | 22.1°C | 40.1°C | 19.8°C | 5 mm | 25% | 2.6 m/s | 7.2 |
| 2005 | 35.4°C | 27.7°C | 20.0°C | 38.9°C | 14.5°C | 1 mm | 27% | 2.7 m/s | 7.4 |
| 2004 | 37.6°C | 29.2°C | 20.7°C | 40.1°C | 17.3°C | 0 mm | 16% | 2.6 m/s | 7.9 |
| 2003 | 37.4°C | 29.9°C | 22.4°C | 39.2°C | 17.9°C | 2 mm | 23% | 2.8 m/s | 6.9 |
| 2002 | 38.2°C | 29.5°C | 20.9°C | 40.2°C | 17.2°C | 0 mm | 19% | 2.8 m/s | 7.9 |
| 2001 | 37.5°C | 29.3°C | 21.1°C | 39.2°C | 17.5°C | 0 mm | 22% | 3.3 m/s | 7.8 |
| 2000 | 37.2°C | 29.4°C | 21.6°C | 40.2°C | 18.0°C | 1 mm | 22% | 2.5 m/s | 7.5 |
| 1999 | 38.0°C | 29.9°C | 21.7°C | 39.8°C | 19.6°C | 0 mm | 17% | 3 m/s | 7.9 |
| 1998 | 35.8°C | 28.5°C | 21.2°C | 40.5°C | 17.7°C | 28 mm | 34% | 2.4 m/s | 7.4 |
| 1997 | 34.2°C | 27.7°C | 21.2°C | 37.8°C | 18.6°C | 25 mm | 37% | 2.7 m/s | 6.7 |
| 1996 | 35.8°C | 28.9°C | 21.9°C | 38.9°C | 18.1°C | 2 mm | 24% | 2.8 m/s | 6.8 |
| 1995 | 35.9°C | 28.7°C | 21.5°C | 38.3°C | 18.5°C | 2 mm | 29% | 2.5 m/s | 6.7 |
| 1994 | 36.7°C | 29.4°C | 22.2°C | 40.6°C | 19.8°C | 0 mm | 28% | 2.7 m/s | 6.9 |
| 1993 | 35.5°C | 28.0°C | 20.6°C | 38.3°C | 16.8°C | 1 mm | 31% | 3.1 m/s | 6.6 |
| 1992 | 36.3°C | 28.6°C | 20.9°C | 38.0°C | 16.9°C | 4 mm | 30% | 2.9 m/s | 6.7 |
| 1991 | 36.7°C | 28.9°C | 21.2°C | 39.6°C | 18.0°C | 27 mm | 26% | 2.8 m/s | 6.8 |
| 1990 | 36.8°C | 28.7°C | 20.6°C | 39.8°C | 16.6°C | 2 mm | 23% | 2.6 m/s | 7 |
| 1989 | 36.2°C | 28.0°C | 19.8°C | 39.0°C | 16.5°C | 2 mm | 20% | 2.9 m/s | 7.1 |
| 1988 | 37.4°C | 29.2°C | 21.0°C | 39.2°C | 18.3°C | 0 mm | 18% | 3.1 m/s | 7.2 |
| 1987 🌧️ | 33.7°C | 26.7°C | 19.7°C | 37.8°C | 16.8°C | 62 mm | 37% | 2.5 m/s | 6.3 |
| 1986 | 36.6°C | 28.4°C | 20.3°C | 39.0°C | 16.0°C | 1 mm | 30% | 3.1 m/s | 7.1 |
| 1985 ❄️ | 32.6°C | 26.4°C | 20.2°C | 37.1°C | 17.0°C | 38 mm | 40% | 1.9 m/s | 6.3 |
| 1984 | 35.7°C | 28.6°C | 21.5°C | 38.8°C | 18.0°C | 0 mm | 27% | 3 m/s | 6.5 |
| 1983 | 34.7°C | 28.2°C | 21.7°C | 38.0°C | 20.0°C | 3 mm | 34% | 2.7 m/s | — |
| 1982 | 35.9°C | 28.4°C | 20.8°C | 38.3°C | 18.4°C | 0 mm | 26% | 3 m/s | — |
| 1981 | 35.6°C | 28.3°C | 21.0°C | 38.8°C | 18.0°C | 27 mm | 30% | 2.6 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 36.4°C with lows near 21.4°C (mean 28.9°C), based on 45 years of NASA POWER data.
May averages 9 mm of rainfall in Qal‘at Bīshah, about average for rainfall. The wettest on record was 62 mm in 1987.
The hottest May reached 41.3°C in 2024. The coldest dipped to 14.5°C in 2005.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.2°C. Daytime highs moved from 34.9°C to 36.7°C and overnight lows from 21°C to 21.7°C over the same span.
May is one of the warmer months of the year in Qal‘at Bīshah and about average for rainfall, so plan for around 36.4°C daytime highs and 21.4°C at night.
Not quite — May is the 8th coolest month in Qal‘at Bīshah, averaging 28.9°C.
For May in Qal‘at Bīshah, pack light, breathable clothing and sun protection, with typical highs of 36.4°C and lows of 21.4°C.
Relative humidity in May averages 27% — relatively dry.
Average wind speed in May is 2.8 m/s. The windiest May on record averaged 3.3 m/s (2001).
The wettest May on record was 1987 with 62 mm. On average, May sees 9 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 Qal‘at Bīshah 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.
