Montevideo weather in December
In December, Montevideo sees average daytime highs of 22°C and overnight lows near 19°C, with 73 mm of rain across 6.8 wet days and about 14.3 hours of daylight. It is the 3rd-warmest and 11th-wettest month of the year here.
Highs climb over the month, from about 21°C in the first days to 23°C by the end. The sky is clear or mostly clear about 53% of the time in December, and the air most often feels humid.
Daylight stretches from about 14 h 12 min at the start of December to 14 h 18 min by month's end. Set against the rest of the year, December is Montevideo's 2nd-clearest and 7th-windiest month. For the whole year in context, see Montevideo's year-round climate.
- Daytime high
- 22°
- 3rd warmest
- Overnight low
- 19°
- 9th coldest
- Rainfall
- 73 mm
- 6.8 wet days
- Daylight
- 14 h 18 min
- 6:31 AM – 8:51 PM
- Cloud cover
- 42%
- 2nd clearest
- Wind
- 22 km/h
- 7th windiest
- Solar energy
- 7.54 kWh/m²
- Travel score
- 7.5
- out of 10
Montevideo is capital and largest city of Uruguay.
- Air quality
- Moderate
- PM2.5 12 µg/m³ · 2018
- Density
- 1,741/km²
- people per km²
- Founded
- 1726
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs climb over the month, from about 21°C in the first days to 23°C by the end.
A typical December day in Montevideo reaches about 22°C in the afternoon and slips back to 19°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, December runs about 3°C warmer than November and about 1°C cooler than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 21 | 18 |
| 2 | 21 | 18 |
| 3 | 21 | 18 |
| 4 | 21 | 18 |
| 5 | 21 | 18 |
| 6 | 21 | 18 |
| 7 | 22 | 18 |
| 8 | 22 | 18 |
| 9 | 22 | 18 |
| 10 | 22 | 18 |
| 11 | 22 | 18 |
| 12 | 22 | 19 |
| 13 | 22 | 19 |
| 14 | 22 | 19 |
| 15 | 22 | 19 |
| 16 | 22 | 19 |
| 17 | 22 | 19 |
| 18 | 22 | 19 |
| 19 | 23 | 19 |
| 20 | 23 | 19 |
| 21 | 23 | 19 |
| 22 | 23 | 19 |
| 23 | 23 | 20 |
| 24 | 23 | 20 |
| 25 | 23 | 20 |
| 26 | 23 | 20 |
| 27 | 23 | 20 |
| 28 | 23 | 20 |
| 29 | 23 | 20 |
| 30 | 23 | 20 |
| 31 | 23 | 20 |
Montevideo weather by month
How December compares with the rest of the year at a glance. December is the 3rd-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 24° / 21° | 67 | 5.8 | 14.1 | 8.0 |
| Feb | 24° / 21° | 91 | 7.4 | 13.3 | 7.5 |
| Mar | 22° / 20° | 97 | 7.8 | 12.3 | 7.3 |
| Apr | 19° / 17° | 107 | 8.4 | 11.1 | 6.5 |
| May | 16° / 14° | 87 | 7.9 | 10.2 | 5.4 |
| Jun | 14° / 11° | 90 | 8.6 | 9.7 | 4.0 |
| Jul | 12° / 10° | 96 | 8.7 | 9.9 | 3.4 |
| Aug | 13° / 11° | 97 | 8.4 | 10.7 | 3.9 |
| Sep | 15° / 12° | 92 | 8.3 | 11.8 | 4.6 |
| Oct | 17° / 14° | 111 | 8.8 | 12.9 | 5.7 |
| Nov | 20° / 17° | 101 | 7.7 | 13.8 | 6.8 |
| Dec | 22° / 19° | 73 | 6.8 | 14.3 | 7.5 |
Cloud cover in December
The sky is clear or mostly clear about 53% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 33%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 65 | 66 | 66 | 66 | 66 | 67 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 67 | 67 | 67 | 67 | 67 | 66 | 67 | 67 | 67 | 66 | 66 | 66 | 67 | 67 | 67 | 67 | 68 | 68 |
| Cloudier (%) | 35 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 34 | 33 | 33 | 33 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 32 | 32 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 65 | 35 |
| 2 | 66 | 34 |
| 3 | 66 | 34 |
| 4 | 66 | 34 |
| 5 | 66 | 34 |
| 6 | 67 | 33 |
| 7 | 67 | 33 |
| 8 | 67 | 33 |
| 9 | 67 | 33 |
| 10 | 67 | 33 |
| 11 | 67 | 33 |
| 12 | 68 | 32 |
| 13 | 68 | 32 |
| 14 | 67 | 33 |
| 15 | 67 | 33 |
| 16 | 67 | 33 |
| 17 | 67 | 33 |
| 18 | 67 | 33 |
| 19 | 66 | 34 |
| 20 | 67 | 33 |
| 21 | 67 | 33 |
| 22 | 67 | 33 |
| 23 | 66 | 34 |
| 24 | 66 | 34 |
| 25 | 66 | 34 |
| 26 | 67 | 33 |
| 27 | 67 | 33 |
| 28 | 67 | 33 |
| 29 | 67 | 33 |
| 30 | 68 | 32 |
| 31 | 68 | 32 |
Chance of precipitation in December
Montevideo gets around 73 mm of rain over 6.8 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 22% and peaks near 23% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 |
| Rain chance (%) | |
|---|---|
| 1 | 23 |
| 2 | 23 |
| 3 | 23 |
| 4 | 22 |
| 5 | 22 |
| 6 | 22 |
| 7 | 22 |
| 8 | 22 |
| 9 | 22 |
| 10 | 22 |
| 11 | 22 |
| 12 | 22 |
| 13 | 23 |
| 14 | 23 |
| 15 | 23 |
| 16 | 23 |
| 17 | 23 |
| 18 | 23 |
| 19 | 23 |
| 20 | 22 |
| 21 | 22 |
| 22 | 22 |
| 23 | 21 |
| 24 | 21 |
| 25 | 21 |
| 26 | 21 |
| 27 | 20 |
| 28 | 20 |
| 29 | 20 |
| 30 | 20 |
| 31 | 19 |
Humidity in December
Most of December feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 28 | 27 | 27 | 27 | 26 | 25 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 15 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 9 |
| Comfortable (%) | 29 | 28 | 28 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 22 | 21 | 20 | 19 | 19 | 18 | 17 | 17 | 16 | 16 | 15 | 15 | 14 |
| Humid (%) | 32 | 32 | 32 | 33 | 33 | 34 | 35 | 35 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 35 | 35 | 34 | 34 | 33 | 32 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 |
| Muggy (%) | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 15 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 23 | 24 | 26 | 27 | 29 | 30 | 32 | 33 | 34 | 35 | 36 | 36 | 36 | 37 | 36 | 36 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 10 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 28 | 29 | 32 | 12 | 0 |
| 2 | 27 | 28 | 32 | 12 | 0 |
| 3 | 27 | 28 | 32 | 12 | 0 |
| 4 | 27 | 27 | 33 | 13 | 0 |
| 5 | 26 | 27 | 33 | 13 | 0 |
| 6 | 25 | 26 | 34 | 14 | 0 |
| 7 | 25 | 26 | 35 | 14 | 0 |
| 8 | 24 | 25 | 35 | 15 | 0 |
| 9 | 23 | 25 | 36 | 15 | 1 |
| 10 | 22 | 25 | 36 | 16 | 1 |
| 11 | 21 | 25 | 37 | 17 | 1 |
| 12 | 20 | 25 | 37 | 18 | 1 |
| 13 | 19 | 25 | 37 | 19 | 1 |
| 14 | 18 | 25 | 37 | 20 | 1 |
| 15 | 17 | 24 | 37 | 21 | 1 |
| 16 | 16 | 24 | 36 | 23 | 1 |
| 17 | 15 | 23 | 36 | 24 | 1 |
| 18 | 15 | 23 | 35 | 26 | 2 |
| 19 | 14 | 22 | 35 | 27 | 2 |
| 20 | 13 | 21 | 34 | 29 | 3 |
| 21 | 13 | 20 | 34 | 30 | 3 |
| 22 | 13 | 19 | 33 | 32 | 4 |
| 23 | 12 | 19 | 32 | 33 | 4 |
| 24 | 12 | 18 | 31 | 34 | 5 |
| 25 | 12 | 17 | 31 | 35 | 6 |
| 26 | 11 | 17 | 30 | 36 | 6 |
| 27 | 11 | 16 | 30 | 36 | 7 |
| 28 | 11 | 16 | 30 | 36 | 8 |
| 29 | 10 | 15 | 30 | 37 | 9 |
| 30 | 10 | 15 | 30 | 36 | 9 |
| 31 | 9 | 14 | 30 | 36 | 10 |
Wind in December
Winds average 22 km/h in December.
Across December, daily wind ranges from about 22 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 23 | breezy |
| 2 | 23 | breezy |
| 3 | 23 | breezy |
| 4 | 23 | breezy |
| 5 | 23 | breezy |
| 6 | 23 | breezy |
| 7 | 23 | breezy |
| 8 | 23 | breezy |
| 9 | 23 | breezy |
| 10 | 23 | breezy |
| 11 | 23 | breezy |
| 12 | 23 | breezy |
| 13 | 23 | breezy |
| 14 | 23 | breezy |
| 15 | 23 | breezy |
| 16 | 23 | breezy |
| 17 | 23 | breezy |
| 18 | 22 | breezy |
| 19 | 22 | breezy |
| 20 | 22 | breezy |
| 21 | 22 | breezy |
| 22 | 22 | breezy |
| 23 | 22 | breezy |
| 24 | 22 | breezy |
| 25 | 22 | breezy |
| 26 | 22 | breezy |
| 27 | 22 | breezy |
| 28 | 22 | breezy |
| 29 | 22 | breezy |
| 30 | 22 | breezy |
| 31 | 22 | breezy |
Sunrise & sunset in December
Daylight runs from about 14 h 12 min at the start of December to 14 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over December. Sunrise moves from 6:29 AM to 6:38 AM, and sunset from 8:40 PM to 8:57 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 |
| Sunrise (AM) | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:30 | 6:30 | 6:30 | 6:30 | 6:31 | 6:31 | 6:31 | 6:32 | 6:32 | 6:32 | 6:33 | 6:33 | 6:34 | 6:34 | 6:35 | 6:35 | 6:36 | 6:37 | 6:37 | 6:38 | 6:38 |
| Sunset (PM) | 8:40 | 8:41 | 8:41 | 8:42 | 8:43 | 8:44 | 8:45 | 8:45 | 8:46 | 8:47 | 8:48 | 8:48 | 8:49 | 8:50 | 8:50 | 8:51 | 8:52 | 8:52 | 8:53 | 8:53 | 8:54 | 8:54 | 8:55 | 8:55 | 8:55 | 8:56 | 8:56 | 8:57 | 8:57 | 8:57 | 8:57 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.2 | 6:29 | 8:40 |
| 2 | 14.2 | 6:29 | 8:41 |
| 3 | 14.2 | 6:29 | 8:41 |
| 4 | 14.2 | 6:29 | 8:42 |
| 5 | 14.2 | 6:29 | 8:43 |
| 6 | 14.2 | 6:29 | 8:44 |
| 7 | 14.3 | 6:29 | 8:45 |
| 8 | 14.3 | 6:29 | 8:45 |
| 9 | 14.3 | 6:29 | 8:46 |
| 10 | 14.3 | 6:29 | 8:47 |
| 11 | 14.3 | 6:30 | 8:48 |
| 12 | 14.3 | 6:30 | 8:48 |
| 13 | 14.3 | 6:30 | 8:49 |
| 14 | 14.3 | 6:30 | 8:50 |
| 15 | 14.3 | 6:31 | 8:50 |
| 16 | 14.3 | 6:31 | 8:51 |
| 17 | 14.3 | 6:31 | 8:52 |
| 18 | 14.3 | 6:32 | 8:52 |
| 19 | 14.3 | 6:32 | 8:53 |
| 20 | 14.3 | 6:32 | 8:53 |
| 21 | 14.3 | 6:33 | 8:54 |
| 22 | 14.3 | 6:33 | 8:54 |
| 23 | 14.3 | 6:34 | 8:55 |
| 24 | 14.3 | 6:34 | 8:55 |
| 25 | 14.3 | 6:35 | 8:55 |
| 26 | 14.3 | 6:35 | 8:56 |
| 27 | 14.3 | 6:36 | 8:56 |
| 28 | 14.3 | 6:37 | 8:57 |
| 29 | 14.3 | 6:37 | 8:57 |
| 30 | 14.3 | 6:38 | 8:57 |
| 31 | 14.3 | 6:38 | 8:57 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 7.54 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 2.18 kWh/m² to a high of 7.54 kWh/m² in December across the year — December's 7.54 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.4 | 7.4 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.4 | Intense |
| 2 | 7.4 | Intense |
| 3 | 7.5 | Intense |
| 4 | 7.5 | Intense |
| 5 | 7.5 | Intense |
| 6 | 7.5 | Intense |
| 7 | 7.5 | Intense |
| 8 | 7.5 | Intense |
| 9 | 7.6 | Intense |
| 10 | 7.6 | Intense |
| 11 | 7.6 | Intense |
| 12 | 7.6 | Intense |
| 13 | 7.6 | Intense |
| 14 | 7.6 | Intense |
| 15 | 7.6 | Intense |
| 16 | 7.5 | Intense |
| 17 | 7.5 | Intense |
| 18 | 7.5 | Intense |
| 19 | 7.5 | Intense |
| 20 | 7.5 | Intense |
| 21 | 7.5 | Intense |
| 22 | 7.5 | Intense |
| 23 | 7.5 | Intense |
| 24 | 7.5 | Intense |
| 25 | 7.5 | Intense |
| 26 | 7.5 | Intense |
| 27 | 7.5 | Intense |
| 28 | 7.5 | Intense |
| 29 | 7.5 | Intense |
| 30 | 7.5 | Intense |
| 31 | 7.5 | Intense |
Is December a good time to visit Montevideo?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is one of the better times to visit Montevideo for general sightseeing.
What to pack for Montevideo in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Montevideo sees daytime highs around 22°C and nights near 19°C. Pack sun protection. Worth having: light clothes and a windbreaker. About 7 days see rain.
Sea temperature near Montevideo in December
The nearest coast averages about 22°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in February at about 24°C and coldest in July near 11°C.
It's comfortable for a long swim from Nov 27 to Apr 9 — about 4.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 23 | 24 | 22 | 19 | 16 | 13 | 11 | 12 | 13 | 16 | 19 | 22 |
| Comfort | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 23 | Refreshing |
| Feb | 24 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 19 | Cool |
| May | 16 | Cool |
| Jun | 13 | Bracing |
| Jul | 11 | Bracing |
| Aug | 12 | Bracing |
| Sep | 13 | Bracing |
| Oct | 16 | Cool |
| Nov | 19 | Cool |
| Dec | 22 | Refreshing |
UV index in Montevideo in December
Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Montevideo peaks around January 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 11 | 10 | 6 | 3 | 2 | 3 | 4 | 6 | 8 | 11 | 11 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 11 | Extreme |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 3 | Moderate |
| Jun | 2 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 8 | Very high |
| Nov | 11 | Extreme |
| Dec | 11 | Extreme |
Air quality in Montevideo in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Montevideo is worst in August — around 16 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (February, 10 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Montevideo's WHO annual average of 12 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 12 | 10 | 10 | 11 | 12 | 13 | 15 | 16 | 14 | 12 | 10 | 10 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 10 | Good |
| Mar | 10 | Good |
| Apr | 11 | Good |
| May | 12 | Moderate |
| Jun | 13 | Moderate |
| Jul | 15 | Moderate |
| Aug | 16 | Moderate |
| Sep | 14 | Moderate |
| Oct | 12 | Good |
| Nov | 10 | Good |
| Dec | 10 | Good |
Where is Montevideo?
Montevideo sits at 34.9°S, 56.2°W, 34 m above sea level, in Uruguay. The nearest listed city is Paso de Carrasco, 13 km away.
Topography around Montevideo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Montevideo.
Within 3 km, the terrain around Montevideo has only modest variations in elevation — a maximum elevation change of 56 m around an average of 16 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 130 m; within 80 km, significant variations in elevation — a maximum elevation change of 394 m.
The land around Montevideo is covered by artificial surfaces (55%) and water (38%) within 3 km, water (53%) and artificial surfaces (21%) within 16 km, and water (43%) and grassland (27%) within 80 km.
Uruguay travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / I / L
- 230 V · 50 Hz
- Prices
- ≈ 66% of US
- price level, 2025
- GDP per capita
- $25,216
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Homicide rate
- 11.2
- per 100k, 2023
- Road deaths
- 14.8
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 542
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Montevideo (-34.9033°, -56.1882°, elevation 34 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).