24°00′N 57°00′E / 24.000°N 57.000°E
The climate of Muscat features a hot, arid climate with long and very hot summers and warm winters. Annual rainfall in Muscat is about 100 millimetres or 4 inches, falling mostly from November to April. In general, precipitation is scarce in Muscat with several months, on average, seeing only a trace of rainfall. The climate is very hot, with temperatures reaching as high as 49 °C or 120 °F in the summer.
For sightseeing, the best time to visit Muscat is from November to February as the temperatures are moderate and pleasant, making it easy to move around. The daytime temperature in Muscat during the winter season is between 23 and 26 °C (73.4 and 78.8 °F), while mornings will be around 13 to 17 °C (55.4 to 62.6 °F). Between March and September, travel is very exhausting with the average temperature between 31 and 38 °C (87.8 and 100.4 °F) with sunburn and dehydration possible.[1]
| Climate data for Muscat | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 34.6 (94.3) |
38.2 (100.8) |
41.5 (106.7) |
44.9 (112.8) |
48.3 (118.9) |
48.5 (119.3) |
49.1 (120.4) |
49.2 (120.6) |
47.2 (117.0) |
43.6 (110.5) |
39.4 (102.9) |
37.8 (100.0) |
49.2 (120.6) |
| Mean daily maximum °C (°F) | 25.5 (77.9) |
26.1 (79.0) |
29.8 (85.6) |
34.7 (94.5) |
39.5 (103.1) |
40.4 (104.7) |
38.6 (101.5) |
36.2 (97.2) |
36.3 (97.3) |
35.0 (95.0) |
30.5 (86.9) |
27.1 (80.8) |
33.3 (92.0) |
| Daily mean °C (°F) | 21.3 (70.3) |
21.9 (71.4) |
25.2 (77.4) |
29.8 (85.6) |
34.2 (93.6) |
35.2 (95.4) |
34.3 (93.7) |
32.0 (89.6) |
31.4 (88.5) |
29.7 (85.5) |
25.7 (78.3) |
22.6 (72.7) |
28.6 (83.5) |
| Mean daily minimum °C (°F) | 17.3 (63.1) |
17.6 (63.7) |
20.7 (69.3) |
24.7 (76.5) |
29.1 (84.4) |
30.6 (87.1) |
30.4 (86.7) |
28.4 (83.1) |
27.5 (81.5) |
24.9 (76.8) |
20.9 (69.6) |
18.9 (66.0) |
24.3 (75.7) |
| Record low °C (°F) | 1.6 (34.9) |
2.3 (36.1) |
7.0 (44.6) |
10.3 (50.5) |
17.2 (63.0) |
21.6 (70.9) |
23.5 (74.3) |
21.3 (70.3) |
19.0 (66.2) |
14.3 (57.7) |
9.4 (48.9) |
4.5 (40.1) |
1.6 (34.9) |
| Average rainfall mm (inches) | 12.8 (0.50) |
24.5 (0.96) |
15.9 (0.63) |
17.1 (0.67) |
7.0 (0.28) |
0.9 (0.04) |
0.2 (0.01) |
0.8 (0.03) |
0.0 (0.0) |
1.0 (0.04) |
6.8 (0.27) |
13.3 (0.52) |
100.3 (3.95) |
| Average relative humidity (%) | 63 | 64 | 58 | 45 | 42 | 49 | 60 | 67 | 63 | 55 | 60 | 65 | 58 |
| Mean monthly sunshine hours | 268.6 | 244.8 | 278.3 | 292.5 | 347.4 | 325.7 | 277.7 | 278.6 | 303.9 | 316.9 | 291.9 | 267.0 | 3,493.3 |
| Source: NOAA (1961–1990) [2] | |||||||||||||