The best time to visit Saudi Arabia is Nov–Mar. It is the only stretch of the year — 5 months — rated go on both daytime heat and rainfall.
Summer 40°C+ furnace
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 21.6 | 71 | 3% | Go |
| February | 24.6 | 76 | 3% | Go |
| March | 28.9 | 84 | 3% | Go |
| April | 34.4 | 94 | 4% | Too hot |
| May | 39.9 | 104 | 1% | Too hot |
| June | 42.8 | 109 | 0% | Too hot |
| July | 43.7 | 111 | 0% | Too hot |
| August | 43.6 | 110 | 0% | Too hot |
| September | 40.5 | 105 | 0% | Too hot |
| October | 35.0 | 95 | 1% | Too hot |
| November | 27.8 | 82 | 4% | Go |
| December | 22.9 | 73 | 2% | Go |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
June is the driest month, with rain on 0% of days and daytime highs near 42.8°C (109°F). April is the wettest, at 4%. Temperature swings hard across the year — 22.1°C between July (43.7°C / 111°F) and January (21.6°C / 71°F) — so packing for the wrong month is the main risk. The record rules out too hot in Apr–Oct.