Frost Dates for RIYADH OBS. (O.A.P., Saudi Arabia

Elevation: 613 m

Frost Dates

Frost date data is incomplete for this station.

24.70°N, 46.73°E © OpenStreetMap

USDA Hardiness Zone

Zone 10a

Avg. annual minimum: −1 to 2°C

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Köppen Climate

BWh Hot Desert

Very hot and extremely dry with minimal rainfall. Irrigation is essential for any gardening. Heat-tolerant crops and desert-adapted plants thrive; shade structures help in peak summer.

Köppen climate map

Temperature

5° 15° 25° 35° 45°

14°

Jan

17°

Feb

21°

Mar

27°

Apr

32°

May

35°

Jun

36°

Jul

36°

Aug

33°

Sep

27°

Oct

20°

Nov

15°

Dec

Avg High Avg Temp Avg Low

Temperature table

Average monthly temperatures (°C)
Month	Avg High	Avg Temp	Avg Low
January	20°	14°	7°
February	23°	17°	9°
March	27°	21°	13°
April	33°	27°	19°
May	39°	32°	24°
June	42°	35°	26°
July	43°	36°	28°
August	43°	36°	27°
September	39°	33°	24°
October	34°	27°	20°
November	26°	20°	14°
December	21°	15°	9°

Precipitation

0 mm 10 mm

3 mm

Jan

0 mm

Feb

3 mm

Mar

3 mm

Apr

0 mm

May

0 mm

Jun

0 mm

Jul

0 mm

Aug

0 mm

Sep

0 mm

Oct

5 mm

Nov

3 mm

Dec

Precipitation table

Average monthly precipitation (millimeters)
Month	Precipitation
January	3
February	0
March	3
April	3
May	0
June	0
July	0
August	0
September	0
October	0
November	5
December	3

Sunrise / Sunset

Jan: 6:41 AM – 5:19 PM · 10h 37m

Feb: 6:25 AM – 5:35 PM · 11h 10m

Mar: 6:05 AM – 5:55 PM · 11h 50m

Apr: 5:43 AM – 6:17 PM · 12h 35m

May: 5:24 AM – 6:36 PM · 13h 12m

Jun: 5:14 AM – 6:46 PM · 13h 31m

Jul: 5:18 AM – 6:42 PM · 13h 24m

Aug: 5:34 AM – 6:26 PM · 12h 52m

Sep: 5:56 AM – 6:04 PM · 12h 08m

Oct: 6:18 AM – 5:42 PM · 11h 24m

Nov: 6:37 AM – 5:23 PM · 10h 46m

Dec: 6:46 AM – 5:14 PM · 10h 28m

Daylight Longest: 13h 32m · Shortest: 10h 28m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	6:41 AM	5:19 PM	10h 37m
February	6:25 AM	5:35 PM	11h 10m
March	6:05 AM	5:55 PM	11h 50m
April	5:43 AM	6:17 PM	12h 35m
May	5:24 AM	6:36 PM	13h 12m
June	5:14 AM	6:46 PM	13h 31m
July	5:18 AM	6:42 PM	13h 24m
August	5:34 AM	6:26 PM	12h 52m
September	5:56 AM	6:04 PM	12h 08m
October	6:18 AM	5:42 PM	11h 24m
November	6:37 AM	5:23 PM	10h 46m
December	6:46 AM	5:14 PM	10h 28m

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