Rosario de la Frontera weather in December

In December, Rosario de la Frontera sees average daytime highs of 27°C and overnight lows near 17°C, with 196 mm of rain across 18.5 wet days and about 13.6 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 18% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 30 min at the start of December to 13 h 36 min by month's end. Set against the rest of the year, December is Rosario de la Frontera's 9th-clearest and 5th-windiest month. For the whole year in context, see Rosario de la Frontera's year-round climate.

Daytime high: 27°; 1st warmest
Overnight low: 17°; 11th coldest
Rainfall: 196 mm; 18.5 wet days
Daylight: 13 h 36 min; 6:28 AM – 8:04 PM
Cloud cover: 65%; 9th clearest
Wind: 8 km/h; 5th windiest
Solar energy: 5.87 kWh/m²
Travel score: 5.2; out of 10

← November Rosario de la Frontera year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Rosario de la Frontera reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 32°C. Set against its neighbours, December runs on par with November and on par with 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)	26	26	26	26	26	27	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	28	28	28	28	28	28	28	28	28
Avg low (°C)	16	16	16	16	16	16	16	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	18	18	18	18	18	18	18	18

	Avg high (°C)	Avg low (°C)
1	26	16
2	26	16
3	26	16
4	26	16
5	26	16
6	27	16
7	27	16
8	27	17
9	27	17
10	27	17
11	27	17
12	27	17
13	27	17
14	27	17
15	27	17
16	27	17
17	27	17
18	27	17
19	27	17
20	28	17
21	28	17
22	28	17
23	28	17
24	28	18
25	28	18
26	28	18
27	28	18
28	28	18
29	28	18
30	28	18
31	28	18

Rosario de la Frontera weather by month

How December compares with the rest of the year at a glance. December is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	27° / 18°	244	20.2	13.4	4.9
Feb	26° / 17°	199	18.1	12.9	5.1
Mar	24° / 16°	169	18.3	12.2	5.5
Apr	22° / 13°	91	13.4	11.4	6.1
May	20° / 10°	42	9	10.8	6.4
Jun	18° / 7°	18	5.3	10.4	6.9
Jul	19° / 5°	13	4	10.6	7.4
Aug	22° / 7°	15	3.5	11.1	8.1
Sep	24° / 10°	25	5.1	11.8	8.0
Oct	26° / 14°	78	11.7	12.6	6.6
Nov	26° / 15°	122	14.8	13.3	5.8
Dec	27° / 17°	196	18.5	13.6	5.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 60%.

	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 (%)	40	39	39	38	38	38	38	38	39	40	40	39	39	40	41	41	41	41	42	42	42	42	42	41	42	42	41	40	41	40	40
Cloudier (%)	60	61	61	62	62	62	62	62	61	60	60	61	61	60	59	59	59	59	58	58	58	58	58	59	58	58	59	60	59	60	60

	Clearer (%)	Cloudier (%)
1	40	60
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	39	61
10	40	60
11	40	60
12	39	61
13	39	61
14	40	60
15	41	59
16	41	59
17	41	59
18	41	59
19	42	58
20	42	58
21	42	58
22	42	58
23	42	58
24	41	59
25	42	58
26	42	58
27	41	59
28	40	60
29	41	59
30	40	60
31	40	60

Chance of precipitation in December

Any precipitation

Rosario de la Frontera gets around 196 mm of rain over 18.5 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 60% and peaks near 64% 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 (%)	57	58	58	59	59	60	60	60	60	60	60	60	60	60	59	59	58	58	58	58	58	58	59	60	60	61	62	62	63	64	64

	Rain chance (%)
1	57
2	58
3	58
4	59
5	59
6	60
7	60
8	60
9	60
10	60
11	60
12	60
13	60
14	60
15	59
16	59
17	58
18	58
19	58
20	58
21	58
22	58
23	59
24	60
25	60
26	61
27	62
28	62
29	63
30	64
31	64

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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 41% of days. Sticky, muggy-or-worse air turns up on roughly 22% 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 (%)	22	21	21	20	19	19	19	18	18	17	17	16	15	15	14	14	13	13	13	12	12	11	11	10	9	9	8	7	7	6	5
Comfortable (%)	31	31	30	30	29	28	28	27	26	25	24	24	23	23	23	22	22	21	21	20	19	19	18	18	17	17	17	17	17	17	17
Humid (%)	38	39	39	40	40	41	41	42	42	42	43	43	43	43	43	43	43	42	42	42	42	42	42	41	41	41	41	40	40	39	39
Muggy (%)	9	9	10	10	11	12	13	13	14	15	16	17	18	19	20	21	22	23	24	26	27	28	29	31	32	33	34	35	36	38	39

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	22	31	38	9
2	21	31	39	9
3	21	30	39	10
4	20	30	40	10
5	19	29	40	11
6	19	28	41	12
7	19	28	41	13
8	18	27	42	13
9	18	26	42	14
10	17	25	42	15
11	17	24	43	16
12	16	24	43	17
13	15	23	43	18
14	15	23	43	19
15	14	23	43	20
16	14	22	43	21
17	13	22	43	22
18	13	21	42	23
19	13	21	42	24
20	12	20	42	26
21	12	19	42	27
22	11	19	42	28
23	11	18	42	29
24	10	18	41	31
25	9	17	41	32
26	9	17	41	33
27	8	17	41	34
28	7	17	40	35
29	7	17	40	36
30	6	17	39	38
31	5	17	39	39

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 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)	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	8	calm
2	8	calm
3	8	calm
4	8	calm
5	8	calm
6	8	calm
7	8	calm
8	8	calm
9	8	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	calm
31	7	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 30 min at the start of December to 13 h 36 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 6:25 AM to 6:35 AM, and sunset from 7:55 PM to 8:11 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)	13.5	13.5	13.5	13.5	13.5	13.5	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6	13.6
Sunrise (AM)	6:25	6:25	6:25	6:25	6:25	6:25	6:25	6:26	6:26	6:26	6:26	6:27	6:27	6:27	6:28	6:28	6:28	6:29	6:29	6:30	6:30	6:30	6:31	6:31	6:32	6:32	6:33	6:34	6:34	6:35	6:35
Sunset (PM)	7:55	7:55	7:56	7:57	7:57	7:58	7:59	7:59	8:00	8:01	8:01	8:02	8:02	8:03	8:04	8:04	8:05	8:05	8:06	8:06	8:07	8:07	8:08	8:08	8:09	8:09	8:09	8:10	8:10	8:10	8:11

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.5	6:25	7:55
2	13.5	6:25	7:55
3	13.5	6:25	7:56
4	13.5	6:25	7:57
5	13.5	6:25	7:57
6	13.5	6:25	7:58
7	13.6	6:25	7:59
8	13.6	6:26	7:59
9	13.6	6:26	8:00
10	13.6	6:26	8:01
11	13.6	6:26	8:01
12	13.6	6:27	8:02
13	13.6	6:27	8:02
14	13.6	6:27	8:03
15	13.6	6:28	8:04
16	13.6	6:28	8:04
17	13.6	6:28	8:05
18	13.6	6:29	8:05
19	13.6	6:29	8:06
20	13.6	6:30	8:06
21	13.6	6:30	8:07
22	13.6	6:30	8:07
23	13.6	6:31	8:08
24	13.6	6:31	8:08
25	13.6	6:32	8:09
26	13.6	6:32	8:09
27	13.6	6:33	8:09
28	13.6	6:34	8:10
29	13.6	6:34	8:10
30	13.6	6:35	8:10
31	13.6	6:35	8:11

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.87 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 5.87 kWh/m² in December across the year — December's 5.87 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)	5.6	5.6	5.6	5.6	5.6	5.6	5.6	5.7	5.7	5.7	5.7	5.8	5.8	5.8	5.8	5.9	5.9	5.9	6.0	6.0	6.0	6.0	6.0	6.0	6.1	6.1	6.1	6.1	6.1	6.1	6.1
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.6	Bright
2	5.6	Bright
3	5.6	Bright
4	5.6	Bright
5	5.6	Bright
6	5.6	Bright
7	5.6	Bright
8	5.7	Bright
9	5.7	Bright
10	5.7	Bright
11	5.7	Bright
12	5.8	Bright
13	5.8	Bright
14	5.8	Bright
15	5.8	Bright
16	5.9	Bright
17	5.9	Bright
18	5.9	Bright
19	6.0	Bright
20	6.0	Bright
21	6.0	Bright
22	6.0	Intense
23	6.0	Intense
24	6.0	Intense
25	6.1	Intense
26	6.1	Intense
27	6.1	Intense
28	6.1	Intense
29	6.1	Intense
30	6.1	Intense
31	6.1	Intense

Planning a trip in December

Hazard calendar for Rosario de la Frontera

In seasonPeak

In December, Rosario de la Frontera sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Rosario de la Frontera's monsoon runs November–March, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is December a good time to visit Rosario de la Frontera?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.2

Sightseeing

10th-best month of the year

5.3

Beach & pool

4th-best month of the year

December is a reasonable time to visit Rosario de la Frontera for sightseeing.

What to pack for Rosario de la Frontera in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Rosario de la Frontera sees daytime highs around 27°C and nights near 17°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in Rosario de la Frontera in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rosario de la Frontera peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	15	15	13	8	6	5	5	7	9	12	13	14
Level	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate	High	Very high	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	15	Extreme
Mar	13	Extreme
Apr	8	Very high
May	6	High
Jun	5	Moderate
Jul	5	Moderate
Aug	7	High
Sep	9	Very high
Oct	12	Extreme
Nov	13	Extreme
Dec	14	Extreme

Location & terrain

Where is Rosario de la Frontera?

Rosario de la Frontera sits at 25.8°S, 65.0°W, 768 m above sea level, in Argentina. The nearest listed city is San José de Metán, 34 km away.

Topography around Rosario de la Frontera

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosario de la Frontera.

Within 3 km, the terrain around Rosario de la Frontera has only modest variations in elevation — a maximum elevation change of 88 m around an average of 791 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 975 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,471 m.

The land around Rosario de la Frontera is covered by cropland (50%) within 3 km, trees (53%) and cropland (38%) within 16 km, and trees (52%) within 80 km.

3 km

88 m

cropland 50%

16 km

975 m

trees 53%

80 km

3,471 m

trees 52%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← November Rosario de la Frontera year-round climate January →Best places to visit in December

December weather nearby: San José de Metán 34 km · Cafayate 105 km · Tafí Viejo 108 km · Rosario de Lerma 109 km · San José de los Cerrillos 113 km · Joaquín V. González 114 km · Alderetes 115 km · San Miguel de Tucuman 116 km

Argentina travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / I; 220 V · 50 Hz
Prices: ≈ 46% of US; price level, 2025
GDP per capita: $14,898; 2025
Happiness: 6.4 / 10; World Happiness, 2025
Homicide rate: 4.5; per 100k, 2023
Road deaths: 14.1; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: High; EF EPI 575
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 Rosario de la Frontera (-25.7986°, -64.9739°, elevation 768 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	26	16
2	26	16
3	26	16
4	26	16
5	26	16
6	27	16
7	27	16
8	27	17
9	27	17
10	27	17
11	27	17
12	27	17
13	27	17
14	27	17
15	27	17
16	27	17
17	27	17
18	27	17
19	27	17
20	28	17
21	28	17
22	28	17
23	28	17
24	28	18
25	28	18
26	28	18
27	28	18
28	28	18
29	28	18
30	28	18
31	28	18

	Clearer (%)	Cloudier (%)
1	40	60
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	39	61
10	40	60
11	40	60
12	39	61
13	39	61
14	40	60
15	41	59
16	41	59
17	41	59
18	41	59
19	42	58
20	42	58
21	42	58
22	42	58
23	42	58
24	41	59
25	42	58
26	42	58
27	41	59
28	40	60
29	41	59
30	40	60
31	40	60

	Rain chance (%)
1	57
2	58
3	58
4	59
5	59
6	60
7	60
8	60
9	60
10	60
11	60
12	60
13	60
14	60
15	59
16	59
17	58
18	58
19	58
20	58
21	58
22	58
23	59
24	60
25	60
26	61
27	62
28	62
29	63
30	64
31	64

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	22	31	38	9
2	21	31	39	9
3	21	30	39	10
4	20	30	40	10
5	19	29	40	11
6	19	28	41	12
7	19	28	41	13
8	18	27	42	13
9	18	26	42	14
10	17	25	42	15
11	17	24	43	16
12	16	24	43	17
13	15	23	43	18
14	15	23	43	19
15	14	23	43	20
16	14	22	43	21
17	13	22	43	22
18	13	21	42	23
19	13	21	42	24
20	12	20	42	26
21	12	19	42	27
22	11	19	42	28
23	11	18	42	29
24	10	18	41	31
25	9	17	41	32
26	9	17	41	33
27	8	17	41	34
28	7	17	40	35
29	7	17	40	36
30	6	17	39	38
31	5	17	39	39

	Avg high (°C)	Avg low (°C)
1	26	16
2	26	16
3	26	16
4	26	16
5	26	16
6	27	16
7	27	16
8	27	17
9	27	17
10	27	17
11	27	17
12	27	17
13	27	17
14	27	17
15	27	17
16	27	17
17	27	17
18	27	17
19	27	17
20	28	17
21	28	17
22	28	17
23	28	17
24	28	18
25	28	18
26	28	18
27	28	18
28	28	18
29	28	18
30	28	18
31	28	18

	Clearer (%)	Cloudier (%)
1	40	60
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	39	61
10	40	60
11	40	60
12	39	61
13	39	61
14	40	60
15	41	59
16	41	59
17	41	59
18	41	59
19	42	58
20	42	58
21	42	58
22	42	58
23	42	58
24	41	59
25	42	58
26	42	58
27	41	59
28	40	60
29	41	59
30	40	60
31	40	60

	Rain chance (%)
1	57
2	58
3	58
4	59
5	59
6	60
7	60
8	60
9	60
10	60
11	60
12	60
13	60
14	60
15	59
16	59
17	58
18	58
19	58
20	58
21	58
22	58
23	59
24	60
25	60
26	61
27	62
28	62
29	63
30	64
31	64

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	22	31	38	9
2	21	31	39	9
3	21	30	39	10
4	20	30	40	10
5	19	29	40	11
6	19	28	41	12
7	19	28	41	13
8	18	27	42	13
9	18	26	42	14
10	17	25	42	15
11	17	24	43	16
12	16	24	43	17
13	15	23	43	18
14	15	23	43	19
15	14	23	43	20
16	14	22	43	21
17	13	22	43	22
18	13	21	42	23
19	13	21	42	24
20	12	20	42	26
21	12	19	42	27
22	11	19	42	28
23	11	18	42	29
24	10	18	41	31
25	9	17	41	32
26	9	17	41	33
27	8	17	41	34
28	7	17	40	35
29	7	17	40	36
30	6	17	39	38
31	5	17	39	39

	Avg high (°C)	Avg low (°C)
1	26	16
2	26	16
3	26	16
4	26	16
5	26	16
6	27	16
7	27	16
8	27	17
9	27	17
10	27	17
11	27	17
12	27	17
13	27	17
14	27	17
15	27	17
16	27	17
17	27	17
18	27	17
19	27	17
20	28	17
21	28	17
22	28	17
23	28	17
24	28	18
25	28	18
26	28	18
27	28	18
28	28	18
29	28	18
30	28	18
31	28	18

	Clearer (%)	Cloudier (%)
1	40	60
2	39	61
3	39	61
4	38	62
5	38	62
6	38	62
7	38	62
8	38	62
9	39	61
10	40	60
11	40	60
12	39	61
13	39	61
14	40	60
15	41	59
16	41	59
17	41	59
18	41	59
19	42	58
20	42	58
21	42	58
22	42	58
23	42	58
24	41	59
25	42	58
26	42	58
27	41	59
28	40	60
29	41	59
30	40	60
31	40	60

	Rain chance (%)
1	57
2	58
3	58
4	59
5	59
6	60
7	60
8	60
9	60
10	60
11	60
12	60
13	60
14	60
15	59
16	59
17	58
18	58
19	58
20	58
21	58
22	58
23	59
24	60
25	60
26	61
27	62
28	62
29	63
30	64
31	64

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	22	31	38	9
2	21	31	39	9
3	21	30	39	10
4	20	30	40	10
5	19	29	40	11
6	19	28	41	12
7	19	28	41	13
8	18	27	42	13
9	18	26	42	14
10	17	25	42	15
11	17	24	43	16
12	16	24	43	17
13	15	23	43	18
14	15	23	43	19
15	14	23	43	20
16	14	22	43	21
17	13	22	43	22
18	13	21	42	23
19	13	21	42	24
20	12	20	42	26
21	12	19	42	27
22	11	19	42	28
23	11	18	42	29
24	10	18	41	31
25	9	17	41	32
26	9	17	41	33
27	8	17	41	34
28	7	17	40	35
29	7	17	40	36
30	6	17	39	38
31	5	17	39	39