January weather forecast
Riyadh, Saudi Arabia

With moderate temperatures ranging from 9°C (48.2°F) to 20.2°C (68.4°F), January offers mild weather amid the arid desert landscape of Riyadh. As the year begins, the city witnesses decreased daylight hours of 10.8, curtailing outdoor activities. The relatively cool conditions are amplified by the lowest UV index reading of 5 in the year, casting a soft, pale light throughout the month. Riyadh residents expect this colder phase, which stands in stark contrast to the heated summer months. Precipitation is slightly above average for Riyadh with 12mm (0.47") rainfall spread over 6.1 days, making January one of the moist months in this generally dry city.

Temperature

Riyadh's temperature records reveal January as the coldest month, marked by average highs of 20.2°C (68.4°F) and lows of 9°C (48.2°F).

Humidity

January and December, with an average relative humidity of 47%, are the most humid months.

Rainfall

In January, in Riyadh, the rain falls for 6.1 days. Throughout January, 12mm (0.47") of precipitation is accumulated. In Riyadh, during the entire year, the rain falls for 44.8 days and collects up to 93mm (3.66") of precipitation.

Daylight

In January, the average length of the day is 10h and 48min.
On the first day of January in Riyadh, sunrise is at 06:37 and sunset at 17:15. On the last day of the month, sunrise is at 06:35 and sunset at 17:37 +03.

Sunshine

The months with the least sunshine in Riyadh are January and December, with an average of 6.9h of sunshine.

UV index

In January, the average daily maximum UV index in Riyadh is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In January, the UV index of 6 transforms into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.