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In terms of precipitation, rainfall in Riyadh ranges from 0.0 - 1.2 inches per month. March is typically the wettest month, when rainfall can reach 1.2 in. June is typically the driest time to visit Riyadh when rainfall is around 0.0 in.
If weather is an important factor for your trip to Riyadh, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 96.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).