May weather forecast
Cairo, Egypt

The weather in May in Cairo prepares the residents for the forthcoming hot summer months. May witnesses minimal patterns of rainfall with average rainfall totaling only 1mm (0.04"). The trend of rising temperatures continues while nights remain enjoyable. It is anticipated that humidity levels will retain a feasible balance, preventing the extreme dryness associated with desert climates. In June, the weather will continue to heat up with temperatures reaching their annual apex.

Temperature

The arrival of May in Cairo introduces a minor uplift in high-temperatures, adjusting from a moderately hot 28.3°C (82.9°F) in April to a tropical 32°C (89.6°F). The average low-temperature reading in May for Cairo reflects a significant fall from the daytime highs, stabilizing at a comfortable 17.7°C (63.9°F).

Heat index

In May, the heat index is evaluated at a tropical 33°C (91.4°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

May is the least humid month, with an average relative humidity of 46%.

Rainfall

In May, the rain falls for 0.5 days. Throughout May, 1mm (0.04") of precipitation is accumulated. In Cairo, during the entire year, the rain falls for 14.2 days and collects up to 25mm (0.98") of precipitation.

Daylight

The average length of the day in May is 13h and 40min.
On the first day of the month, sunrise is at 6:11 am and sunset at 7:32 pm. On the last day of May, in Cairo, Egypt, sunrise is at 5:54 am and sunset at 7:51 pm EEST.

Sunshine

In May, the average sunshine in Cairo is 10.5h.

UV index

In Cairo, the average daily maximum UV index in May is 10. A UV Index value of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 10 in May translates into the following instructions:
Immediate precautions are necessary; otherwise, skin and eyes might get damaged quickly. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. After every outdoor workout or swim, liberally apply and frequently reapply a broad-spectrum SPF 30+ sunscreen.