Nova Hartz weather in December

In December, Nova Hartz sees average daytime highs of 27°C and overnight lows near 17°C, with 178 mm of rain across 15.2 wet days and about 13.9 hours of daylight. It is the 3rd-warmest and 4th-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 33% 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 Nova Hartz's 6th-clearest and 7th-windiest month. For the whole year in context, see Nova Hartz's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
17°
10th coldest
Rainfall
178 mm
15.2 wet days
Daylight
13 h 54 min
6:23 AM – 8:16 PM
Cloud cover
58%
6th clearest
Wind
8 km/h
7th windiest
Solar energy
6.36 kWh/m²
Travel score
5.7
out of 10

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 Nova Hartz 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 23°C and 31°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32716
42716
52716
62716
72716
82717
92717
102717
112717
122717
132717
142717
152717
162717
172717
182717
192817
202817
212818
222818
232818
242818
252818
262818
272818
282818
292818
302818
312818

Nova Hartz weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°21018.113.75.2
Feb28° / 18°17917.113.15.2
Mar26° / 17°16015.212.25.9
Apr24° / 15°13311.611.36.6
May20° / 11°1381110.56.2
Jun19° / 10°1341110.15.9
Jul18° / 17111.310.35.9
Aug20° / 10°1421110.96.3
Sep21° / 12°17712.911.86.0
Oct23° / 14°21715.212.76.0
Nov25° / 15°15813.713.56.2
Dec27° / 17°17815.213.95.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
34951
45050
55050
65050
75050
85149
95149
105050
115050
125149
135149
145149
155149
165149
175149
185149
195149
205149
215050
225050
235050
245050
255050
264951
274852
284951
294852
304852
314951

Chance of precipitation in December

Any precipitation

Nova Hartz gets around 178 mm of rain over 15.2 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 49% and peaks near 52% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
147
247
347
447
547
647
747
848
948
1048
1148
1249
1349
1449
1550
1650
1750
1851
1951
2051
2151
2251
2351
2451
2551
2651
2751
2851
2951
3051
3152

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1122434272
2122434282
3122334292
4112334292
5112234302
6112234313
7102134323
8102134323
992034333
1092034344
1181934354
1281934354
1371834365
1471733375
1571733386
1661632397
1761632397
1861531398
1961531409
20514304010
21514304011
22514304012
23413294013
24413294014
25412284015
26412284016
27312274017
28312274018
29312274018
30312274019
31212274019

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 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
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 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 6:21 AM to 6:31 AM, and sunset from 8:06 PM to 8:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.86:218:06
213.86:218:07
313.86:218:08
413.86:218:08
513.86:218:09
613.86:218:10
713.86:218:11
813.86:218:11
913.86:218:12
1013.96:218:13
1113.96:228:13
1213.96:228:14
1313.96:228:15
1413.96:228:15
1513.96:238:16
1613.96:238:16
1713.96:238:17
1813.96:248:18
1913.96:248:18
2013.96:258:19
2113.96:258:19
2213.96:268:20
2313.96:268:20
2413.96:278:20
2513.96:278:21
2613.96:288:21
2713.96:288:22
2813.96:298:22
2913.96:298:22
3013.96:308:23
3113.96:318:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.36 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 6.36 kWh/m² in December across the year — December's 6.36 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in December

Is December a good time to visit Nova Hartz?

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

5.7
Sightseeing
10th-best month of the year
5.9
Beach & pool
1st-best month of the year

December is a reasonable time to visit Nova Hartz for sightseeing.

What to pack for Nova Hartz in December

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

In December, Nova Hartz sees daytime highs around 27°C and nights near 17°C. Pack light clothes, rain gear and sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Nova Hartz in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nova Hartz peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 17UV 13Jun 21UV 4
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Very high
Apr8Very high
May5Moderate
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct9Very high
Nov12Extreme
Dec13Extreme

Air quality in Nova Hartz 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 Nova Hartz is worst in August — around 22 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (February, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1822 µg/m³Feb 149 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb9Good
Mar10Good
Apr11Good
May12Moderate
Jun12Good
Jul15Moderate
Aug22Moderate
Sep18Moderate
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Nova Hartz?

Nova Hartz sits at 29.6°S, 50.9°W, 64 m above sea level, in Brazil. The nearest listed city is Parobé, 8.0 km away.

Topography around Nova Hartz

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

Within 3 km, the terrain around Nova Hartz has significant variations in elevation — a maximum elevation change of 377 m around an average of 88 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 878 m; within 80 km, large variations in elevation — a maximum elevation change of 1,049 m.

The land around Nova Hartz is covered by trees (64%) and grassland (23%) within 3 km, trees (71%) and grassland (20%) within 16 km, and trees (55%) and grassland (27%) within 80 km.

3 km
377 m
16 km
878 m
80 km
1,049 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Parobé 8.0 km · Igrejinha 11 km · Sapiranga 12 km · Taquara 14 km · Três Coroas 14 km · Dois Irmãos 18 km · Campo Bom 18 km · Gramado 23 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 Nova Hartz (-29.5843°, -50.9028°, elevation 64 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).