May in Ha'il averages a daily high of 35.1°C with nights around 19.5°C. Rain is rare — about 0 wet days and 0mm across the month. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ha'il is February–March.
Based on HAIL, SA (9.9km), 1995–2024. 13 years of May data.