Uruguay Weather
The climate of Uruguay is humid subtropical, and is fairly uniform nationwide. The country is located entirely within the temperate zone, and although seasonal variations are pronounced, extremes in temperature are quite rare. High humidity and fog are common, and water is plentiful. The absence of mountains and others weather barriers makes all locations vulnerable to high winds and rapid changes in weather as fronts or storms sweep across the country.
Spring in Uruguay are typically damp, cool, and windy; summers are warm; autumns are mild; and winters are chilly and damp. Northwestern Uruguay, however, is farther from large bodies of water and therefore has warmer summers and milder and drier winters than the rest of the country. Average highs and lows in summer (January) in Montevideo are 82.4 and 62.6 °F, respectively, with an absolute maximum of 109.4 °F. Winter (July) average highs and lows in Montevideo are 57.2 and 42.8 °F, respectively, although the high humidity makes the temperatures feel colder; the lowest temperature ever registered in Montevideo is 24.8 °F.
As in most temperate climates, rainfall results from the passage of cold fronts in winter, falling in overcast drizzly spells, and summer thunderstorms are frequent.
High winds are common during the winter and spring, and wind shifts are sudden and pronounced. A winter warm spell can be abruptly broken by a strong Pampero, a chilly wind blowing north from the Argentine pampas. Summer winds off the ocean, however, have the more pleasant effect of tempering hot daytime temperatures.
Climate Chart: Montevideo
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Absolute High Temperature ºF
102
97
93
95
85
86
83
90
90
90
95
97
Average High Temperature ºF
83
82
78
72
66
60
60
62
65
70
75
80
Average Low Temperature ºF
71
72
72
74
74
74
74
74
74
73
73
74
Average Rainfall (inches)
3.4
4
4.1
3.4
3.5
3.3
3.4
3.5
3.7
4.3
3.5
3.3
Average Days w/Rain
8
8
8
8
9
9
10
8
8
10
9
8
Climate Chart: Punta Del Este
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Absolute High Temperature ºF
95
95
89
92
84
79
83
88
90
92
90
97
Average High Temperature ºF
79
78
76
70
64
59
57
60
62
68
72
77
Average Low Temperature ºF
68
67
66
61
54
49
48
49
53
58
63
67
Average Rainfall (inches)
3
3.3
3.1
3.3
3.6
3.2
3.6
3.7
3.7
3.3
3.4
2.6
Average Days w/Rain
8
9
9
9
9
10
10
9
9
9
8
8