Olímpia weather in December

In December, Olímpia sees average daytime highs of 30°C and overnight lows near 22°C, with 217 mm of rain across 22.2 wet days and about 13.2 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 15% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 12 min at the start of December to 13 h 12 min by month's end. Set against the rest of the year, December is Olímpia's 11th-clearest and 8th-windiest month. For the whole year in context, see Olímpia's year-round climate.

Daytime high
30°
5th warmest
Overnight low
22°
10th coldest
Rainfall
217 mm
22.2 wet days
Daylight
13 h 18 min
6:34 AM – 7:49 PM
Cloud cover
72%
11th clearest
Wind
8 km/h
8th windiest
Solar energy
5.85 kWh/m²
Travel score
3.6
out of 10

Olímpia is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Olímpia reaches about 30°C in the afternoon and slips back to 22°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153022
163022
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022
313022

How December really feels in Olímpia

Once humidity and wind are folded in, December averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Olímpia weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°25622.213.13.5
Feb30° / 22°18219.612.73.6
Mar30° / 21°15918.612.14.1
Apr29° / 20°588.511.55.6
May27° / 17°395.1117.4
Jun27° / 16°232.910.88.0
Jul28° / 16°15210.98.0
Aug30° / 17°172.211.36.5
Sep31° / 19°556.511.95.0
Oct31° / 21°10211.712.54.1
Nov31° / 21°15016.7133.9
Dec30° / 22°21722.213.23.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23070
32971
42971
52971
62773
72773
82872
92872
102773
112872
122872
132971
142971
153070
163070
173169
183169
193169
203169
213169
223169
233169
243169
253070
262971
272971
282872
292872
302773
312773

Chance of precipitation in December

Any precipitation

Olímpia gets around 217 mm of rain over 22.2 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 71% and peaks near 72% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
165
266
368
469
570
671
771
872
972
1072
1172
1272
1372
1472
1572
1672
1772
1871
1971
2071
2171
2271
2371
2471
2571
2671
2771
2871
2971
3071
3171

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 51% of days. Sticky, muggy-or-worse air turns up on roughly 92% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
114145031
214125033
314115035
413104936
51394938
61394939
71284840
81284941
90274942
100174942
110174942
120175042
130175042
140175042
150075142
160075241
170065341
180065341
190065341
200065341
210055441
220055441
230045442
240045343
250045244
260035245
270035146
280035047
290034948
300034849
310034750

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 12 min at the start of December to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:30 AM to 6:42 AM, and sunset from 7:40 PM to 7:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:307:40
213.26:307:41
313.26:317:42
413.26:317:42
513.26:317:43
613.26:317:44
713.26:317:44
813.26:327:45
913.26:327:45
1013.26:327:46
1113.26:337:47
1213.26:337:47
1313.26:337:48
1413.26:347:48
1513.26:347:49
1613.36:347:49
1713.36:357:50
1813.36:357:50
1913.36:357:51
2013.36:367:51
2113.36:367:52
2213.36:377:52
2313.36:377:53
2413.36:387:53
2513.36:387:54
2613.36:397:54
2713.36:397:55
2813.36:407:55
2913.26:407:55
3013.26:417:56
3113.26:427:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.85 kWh/m².

For context, solar energy here swings from a low near 3.95 kWh/m² to a high of 6.12 kWh/m² in October across the year — December's 5.85 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.7Bright
Planning a trip in December

Hazard calendar for Olímpia

In seasonPeak

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

Olímpia'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 Olímpia?

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

3.6
Sightseeing
10th-best month of the year
4.9
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Olímpia.

What to pack for Olímpia in December

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

In December, Olímpia sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Olímpia 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 Olímpia peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 22UV 15Jun 20UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Very high
Oct10Extreme
Nov13Extreme
Dec14Extreme

Air quality in Olímpia 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 Olímpia is worst in September — around 35 µg/m³ PM2.5 (moderate), about 4.0× the cleanest month (November, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1134 µg/m³Nov 229 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar11Good
Apr12Good
May13Moderate
Jun13Moderate
Jul14Moderate
Aug31Moderate
Sep35Moderate
Oct19Moderate
Nov9Good
Dec10Good
Location & terrain

Where is Olímpia?

Olímpia sits at 20.7°S, 48.9°W, 520 m above sea level, in Brazil. The nearest listed city is Guapiaçu, 32 km away.

Topography around Olímpia

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

Within 3 km, the terrain around Olímpia has only modest variations in elevation — a maximum elevation change of 103 m around an average of 514 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 152 m; within 80 km, significant variations in elevation — a maximum elevation change of 376 m.

The land around Olímpia is covered by artificial surfaces (35%), cropland (26%) and grassland (24%) within 3 km, cropland (61%) and trees (24%) within 16 km, and cropland (67%) within 80 km.

3 km
103 m
16 km
152 m
80 km
376 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Guapiaçu 32 km · Monte Azul Paulista 34 km · Colina 39 km · Barretos 41 km · Catanduva 45 km · Nova Granada 47 km · São José do Rio Preto 49 km · Bebedouro 51 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 Olímpia (-20.7372°, -48.9147°, elevation 520 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. 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).