São Sepé weather in December

In December, São Sepé sees average daytime highs of 30°C and overnight lows near 18°C, with 128 mm of rain across 10.4 wet days and about 13.9 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 30°C by the end. The sky is clear or mostly clear about 42% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 48 min at the start of December to 13 h 54 min by month's end. Set against the rest of the year, December is São Sepé's 1st-clearest and 4th-windiest month. For the whole year in context, see São Sepé's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
128 mm
10.4 wet days
Daylight
13 h 54 min
6:32 AM – 8:28 PM
Cloud cover
53%
1st clearest
Wind
12 km/h
4th windiest
Solar energy
6.82 kWh/m²
Travel score
5.2
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 29°C in the first days to 30°C by the end.

A typical December day in São Sepé reaches about 30°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 34°C. Set against its neighbours, December runs about 3°C warmer than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12917
22917
32917
42917
52917
62918
72918
82918
92918
102918
112918
122918
133018
143018
153018
163018
173018
183019
193019
203019
213019
223019
233019
243019
253019
263019
273019
283019
293019
303019
313120

São Sepé weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°12712.213.74.6
Feb30° / 20°11811.613.14.8
Mar29° / 18°1139.912.25.9
Apr25° / 15°136911.37.0
May21° / 12°1208.710.56.7
Jun19° / 10°1379.910.16.0
Jul18° / 1401010.36.0
Aug20° / 10°1269.410.96.5
Sep22° / 12°15910.611.86.4
Oct24° / 14°19111.612.76.6
Nov27° / 16°1259.413.56.5
Dec30° / 18°12810.413.95.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35545
45545
55545
65545
75545
85545
95644
105644
115644
125644
135644
145644
155644
165644
175644
185644
195644
205644
215644
225644
235644
245545
255644
265545
275545
285545
295545
305545
315545

Chance of precipitation in December

Any precipitation

São Sepé gets around 128 mm of rain over 10.4 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 33% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
232
332
431
531
631
731
831
930
1030
1130
1231
1331
1431
1532
1633
1733
1834
1934
2035
2135
2235
2336
2436
2536
2636
2736
2836
2936
3036
3136

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the muggy band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 42% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11528302250
21527302350
31527302350
41526302350
51525302450
61525302450
71524302560
81524292660
91523292760
101523282760
111423282870
121422282970
131322273070
141221273180
151221263290
161120263390
1711192534100
1810192535110
199182535120
209182436130
218182436140
228172436151
237172436161
247162335171
256162335181
266162335191
276152334201
285152334211
295152434221
305152433231
314152433241

Wind in December

Winds average 12 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 48 min at the start of December to 13 h 54 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 6:30 AM to 6:40 AM, and sunset from 8:18 PM to 8:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.86:308:18
213.86:308:19
313.86:308:20
413.86:308:20
513.96:308:21
613.96:308:22
713.96:308:23
813.96:308:23
913.96:318:24
1013.96:318:25
1113.96:318:25
1213.96:318:26
1313.96:318:27
1413.96:328:27
1513.96:328:28
1613.96:328:28
1713.96:338:29
1813.96:338:30
1913.96:348:30
2013.96:348:31
2113.96:348:31
2213.96:358:32
2313.96:358:32
2413.96:368:33
2513.96:368:33
2613.96:378:33
2713.96:378:34
2813.96:388:34
2913.96:398:34
3013.96:398:35
3113.96:408:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.82 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 6.82 kWh/m² in December across the year — December's 6.82 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.7Intense
286.7Intense
296.7Intense
306.7Intense
316.7Intense
Planning a trip in December

Is December a good time to visit São Sepé?

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
7.0
Beach & pool
2nd-best month of the year

December is a reasonable time to visit São Sepé for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for São Sepé in December

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

In December, São Sepé sees daytime highs around 30°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in São Sepé in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São Sepé peaks around January 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 18UV 13Jun 18UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Extreme
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct7Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is São Sepé?

São Sepé sits at 30.2°S, 53.6°W, 96 m above sea level, in Brazil. The nearest listed city is Caçapava do Sul, 40 km away.

Topography around São Sepé

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Sepé.

Within 3 km, the terrain around São Sepé has only modest variations in elevation — a maximum elevation change of 101 m around an average of 89 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 261 m; within 80 km, significant variations in elevation — a maximum elevation change of 587 m.

The land around São Sepé is covered by cropland (39%) and trees (27%) within 3 km, cropland (55%) and grassland (25%) within 16 km, and cropland (38%), grassland (33%) and trees (28%) within 80 km.

3 km
101 m
16 km
261 m
80 km
587 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Caçapava do Sul 40 km · Santa Maria 58 km · Agudo 65 km · Cachoeira do Sul 66 km · São Gabriel 75 km · São Pedro do Sul 84 km · Candelária 93 km · Júlio de Castilhos 104 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 São Sepé (-30.1606°, -53.5653°, elevation 96 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).