Pelotas weather in September

In September, Pelotas sees average daytime highs of 18°C and overnight lows near 13°C, with 141 mm of rain across 10.6 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 18°C through the month. The sky is clear or mostly clear about 30% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Pelotas's 11th-clearest and 3rd-windiest month. For the whole year in context, see Pelotas's year-round climate.

Daytime high
18°
9th warmest
Overnight low
13°
4th coldest
Rainfall
141 mm
10.6 wet days
Daylight
11 h 48 min
7:29 AM – 7:18 PM
Cloud cover
62%
11th clearest
Wind
18 km/h
3rd windiest
Solar energy
4.08 kWh/m²
Travel score
5.8
out of 10

Pelotas is human settlement in Brazil.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 18°C through the month.

A typical September day in Pelotas reaches about 18°C in the afternoon and slips back to 13°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 22°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11813
21813
31813
41813
51813
61813
71813
81813
91813
101813
111813
121813
131813
141813
151813
161813
171813
181813
191813
201813
211813
221813
231813
241914
251914
261914
271914
281914
291914
301914

Pelotas weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 21°10911.613.86.5
Feb26° / 21°10512.613.26.2
Mar25° / 20°10211.812.26.6
Apr23° / 18°11610.211.26.8
May19° / 14°1059.310.46.3
Jun17° / 12°1119.9105.5
Jul16° / 11°11710.210.15.1
Aug17° / 12°1169.710.85.7
Sep18° / 13°14110.611.85.8
Oct20° / 15°14010.512.86.2
Nov23° / 17°958.813.67.0
Dec25° / 20°1009.8147.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44456
54357
64258
74258
84258
94258
104258
114258
124159
134258
144258
154159
164258
174258
184258
194357
204357
214357
224357
234357
244357
254258
264258
274258
284060
294060
304060

Chance of precipitation in September

Any precipitation

Pelotas gets around 141 mm of rain over 10.6 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
337
438
538
638
738
838
938
1037
1137
1236
1336
1435
1535
1634
1734
1833
1933
2033
2133
2233
2333
2433
2533
2634
2734
2835
2935
3036

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 52% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15429161
25528161
35528161
45428171
55428171
65428171
75428171
85428171
95528161
105528161
115429161
125429161
135429161
145430151
155430151
165430151
175331151
185331151
195431141
205431141
215232142
225132152
235033152
245033152
254933162
264834162
274734172
284634182
294634182
304534193

Wind in September

Winds average 18 km/h in September.

Across September, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
117light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 18 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over September. Sunrise moves from 7:50 AM to 7:10 AM, and sunset from 7:09 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.37:507:09
211.37:487:09
311.47:477:10
411.47:467:10
511.47:447:11
611.57:437:12
711.57:427:12
811.57:407:13
911.67:397:14
1011.67:387:14
1111.67:367:15
1211.77:357:15
1311.77:347:16
1411.77:327:17
1511.87:317:17
1611.87:297:18
1711.87:287:19
1811.97:277:19
1911.97:257:20
2011.97:247:20
2112.07:237:21
2212.07:217:22
2312.07:207:22
2412.17:187:23
2512.17:177:24
2612.17:167:24
2712.27:147:25
2812.27:137:26
2912.27:127:26
3012.37:107:27

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.08 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 6.76 kWh/m² in December across the year — September's 4.08 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.7Moderate
43.7Moderate
53.7Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.9Moderate
113.9Moderate
123.9Moderate
134.0Moderate
144.0Bright
154.0Bright
164.1Bright
174.1Bright
184.2Bright
194.2Bright
204.2Bright
214.3Bright
224.3Bright
234.3Bright
244.4Bright
254.4Bright
264.4Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Is September a good time to visit Pelotas?

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

5.8
Sightseeing
9th-best month of the year
2.1
Beach & pool
9th-best month of the year

September is a reasonable time to visit Pelotas for sightseeing.

What to pack for Pelotas in September

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

In September, Pelotas sees daytime highs around 18°C and nights near 13°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Pelotas in September

The nearest coast averages about 15°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 44 km away) is warmest in February at about 24°C and coldest in July near 14°C.

It's comfortable for a long swim from Nov 18 to May 4 — about 5.5 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan24Refreshing
Feb24Warm
Mar24Refreshing
Apr22Refreshing
May19Cool
Jun16Cool
Jul14Bracing
Aug14Bracing
Sep15Cool
Oct18Cool
Nov20Cool
Dec22Refreshing

UV index in Pelotas in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pelotas peaks around January 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 12UV 12Jun 20UV 3
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar9Very high
Apr7High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep7Very high
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Pelotas?

Pelotas sits at 31.8°S, 52.3°W, 15 m above sea level, in Brazil. The nearest listed city is Capão do Leão, 14 km away.

Topography around Pelotas

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

Within 3 km, the terrain around Pelotas has only modest variations in elevation — a maximum elevation change of 27 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 161 m; within 80 km, significant variations in elevation — a maximum elevation change of 507 m.

The land around Pelotas is covered by artificial surfaces (52%) and wetland (26%) within 3 km, wetland (25%) and grassland (20%) within 16 km, and water (31%) and trees (25%) within 80 km.

3 km
27 m
16 km
161 m
80 km
507 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Capão do Leão 14 km · Rio Grande 37 km · São José do Norte 39 km · Canguçu 52 km · São Lourenço do Sul 57 km · Piratini 81 km · Arroio Grande 87 km · Camaquã 114 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 Pelotas (-31.77°, -52.341°, elevation 15 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).