Salinópolis weather in December

In December, Salinópolis sees average daytime highs of 28°C and overnight lows near 26°C, with 112 mm of rain across 17.6 wet days and about 12 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 31% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of December to 12 hours by month's end. Set against the rest of the year, December is Salinópolis's 7th-clearest and 5th-windiest month. For the whole year in context, see Salinópolis's year-round climate.

Daytime high
28°
5th warmest
Overnight low
26°
8th coldest
Rainfall
112 mm
17.6 wet days
Daylight
12 hours
6:05 AM – 6:07 PM
Cloud cover
58%
7th clearest
Wind
20 km/h
5th windiest
Solar energy
5.67 kWh/m²
Travel score
5.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical December day in Salinópolis reaches about 28°C in the afternoon and slips back to 26°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 28°C. Set against its neighbours, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826
312826

Salinópolis weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°33728.7123.7
Feb27° / 25°44927.3123.4
Mar27° / 25°55430.4123.4
Apr27° / 25°50129.4123.4
May28° / 26°37828.7123.7
Jun28° / 26°18225.1124.3
Jul28° / 26°11021125.2
Aug28° / 26°3010126.8
Sep28° / 26°103.1127.8
Oct28° / 26°92.8127.5
Nov28° / 26°215.5126.7
Dec28° / 26°11217.6125.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46436
56337
66337
76238
86139
96040
105941
115941
125842
135743
145644
155545
165347
175248
185149
195050
205050
214852
224753
234753
244753
254654
264555
274555
284456
294357
304357
314258

Chance of precipitation in December

Any precipitation

Salinópolis gets around 112 mm of rain over 17.6 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 57% and peaks near 81% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
129
231
333
434
536
638
740
843
945
1047
1149
1251
1353
1455
1557
1659
1760
1862
1964
2065
2166
2268
2369
2471
2572
2673
2775
2876
2978
3079
3181

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
16931
26733
36634
46535
56436
66337
76238
86139
95941
105842
115743
125644
135446
145347
155248
165149
175149
185050
195050
204951
214951
224951
234951
244951
255050
265050
275149
285248
295347
305446
315545

Wind in December

Winds average 20 km/h in December.

Across December, daily wind ranges from about 19 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1120breezy
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120light breeze
2220light breeze
2320light breeze
2420light breeze
2520light breeze
2620light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 hours at the start of December to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:58 AM to 6:12 AM, and sunset from 6:00 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:586:00
212.05:596:01
312.05:596:01
412.05:596:01
512.06:006:02
612.06:006:02
712.06:016:03
812.06:016:03
912.06:016:03
1012.06:026:04
1112.06:026:04
1212.06:036:05
1312.06:036:05
1412.06:046:06
1512.06:046:06
1612.06:056:07
1712.06:056:07
1812.06:056:08
1912.06:066:08
2012.06:066:09
2112.06:076:09
2212.06:076:09
2312.06:086:10
2412.06:086:10
2512.06:096:11
2612.06:096:11
2712.06:106:12
2812.06:106:12
2912.06:116:13
3012.06:116:13
3112.06:126:14

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.67 kWh/m².

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 6.52 kWh/m² in October across the year — December's 5.67 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Bright
46.0Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.6Bright
185.6Bright
195.6Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.4Bright
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.2Bright
Planning a trip in December

Hazard calendar for Salinópolis

In seasonPeak

None of Salinópolis's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Salinópolis's monsoon runs January–May, 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 Salinópolis?

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

5.3
Sightseeing
5th-best month of the year
5.7
Beach & pool
5th-best month of the year

December is a reasonable time to visit Salinópolis for sightseeing.

What to pack for Salinópolis in December

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

In December, Salinópolis sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 18 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Salinópolis in December

The nearest coast averages about 28°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 June at about 29°C and coldest in February near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr28Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct28Tropical
Nov28Tropical
Dec28Tropical

UV index in Salinópolis in December

LowModerateHighVery highExtreme

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 Salinópolis peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 18 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jul 18UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Salinópolis in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Salinópolis is worst in February — around 22 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (July, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2022 µg/m³Jul 127 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb22Moderate
Mar21Moderate
Apr16Moderate
May9Good
Jun7Good
Jul7Good
Aug8Good
Sep10Good
Oct11Good
Nov13Moderate
Dec15Moderate
Location & terrain

Where is Salinópolis?

Salinópolis sits at 0.6°S, 47.4°W, 1 m above sea level, in Brazil. The nearest listed city is Maracanã, 20 km away.

Topography around Salinópolis

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

Within 3 km, the terrain around Salinópolis has only modest variations in elevation — a maximum elevation change of 28 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 51 m; within 80 km, only modest variations in elevation — a maximum elevation change of 85 m.

The land around Salinópolis is covered by water (37%) and mangroves (31%) within 3 km, water (54%) and trees (21%) within 16 km, and water (43%) and trees (34%) within 80 km.

3 km
28 m
16 km
51 m
80 km
85 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Maracanã 20 km · São João de Pirabas 26 km · Marapanim 40 km · Curuçá 56 km · Igarapé-Açu 64 km · Capanema 67 km · Tracuateua 71 km · São Caetano de Odivelas 75 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 Salinópolis (-0.621°, -47.3542°, elevation 1 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).