Frederico Westphalen weather in September

In September, Frederico Westphalen sees average daytime highs of 25°C and overnight lows near 14°C, with 175 mm of rain across 10.8 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 42% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Frederico Westphalen's 4th-clearest and 1st-windiest month. For the whole year in context, see Frederico Westphalen's year-round climate.

Daytime high
25°
8th warmest
Overnight low
14°
5th coldest
Rainfall
175 mm
10.8 wet days
Daylight
11 h 48 min
7:33 AM – 7:23 PM
Cloud cover
52%
4th clearest
Wind
9 km/h
1st windiest
Solar energy
4.59 kWh/m²
Travel score
6.9
out of 10

Frederico Westphalen 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 25°C through the month.

A typical September day in Frederico Westphalen reaches about 25°C in the afternoon and slips back to 14°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12413
22413
32413
42413
52413
62413
72413
82413
92413
102413
112413
122413
132413
142413
152414
162414
172414
182414
192414
202414
212514
222514
232514
242514
252514
262514
272514
282514
292515
302515

How September really feels in Frederico Westphalen

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Frederico Westphalen weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°16116.413.54.1
Feb30° / 20°14615.4134.3
Mar29° / 19°13312.812.25.2
Apr26° / 16°14010.311.46.6
May22° / 13°1679.210.76.9
Jun21° / 11°1639.710.36.5
Jul21° / 10°1539.910.46.6
Aug23° / 12°1058117.4
Sep25° / 14°17510.811.86.9
Oct27° / 16°22713.712.76.0
Nov28° / 17°1761213.45.7
Dec30° / 19°18514.513.74.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
25941
35842
45743
55545
65545
75446
85347
95248
105248
115248
125248
135149
145248
155149
165149
175149
185149
195149
205149
215050
225149
235050
244951
254852
264852
274753
284654
294555
304456

Chance of precipitation in September

Any precipitation

Frederico Westphalen gets around 175 mm of rain over 10.8 wet days in September. 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 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
127
227
328
429
529
630
731
832
933
1034
1134
1235
1335
1436
1536
1637
1737
1838
1938
2039
2139
2239
2340
2440
2540
2640
2740
2840
2940
3041

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14333232
24232242
34232242
44231252
54131252
64130263
74130263
84130273
94029273
104029283
113929284
123929294
133828294
143728295
153728305
163728305
173728306
183627306
193627316
203627317
213527317
223527317
233427328
243327328
253227338
263127339
273027349
2829273410
2928273410
3027273411

Wind in September

Winds average 9 km/h in September, the windiest month of the year.

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

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 24 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over September. Sunrise moves from 7:50 AM to 7:16 AM, and sunset from 7:16 PM to 7:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:507:16
211.57:497:17
311.57:487:17
411.57:477:18
511.57:467:18
611.67:457:19
711.67:437:19
811.67:427:19
911.67:417:20
1011.77:407:20
1111.77:397:21
1211.77:387:21
1311.87:367:22
1411.87:357:22
1511.87:347:23
1611.87:337:23
1711.97:317:24
1811.97:307:24
1911.97:297:24
2012.07:287:25
2112.07:277:25
2212.07:257:26
2312.07:247:26
2412.17:237:27
2512.17:227:27
2612.17:217:28
2712.17:207:28
2812.27:187:29
2912.27:177:29
3012.27:167:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.59 kWh/m².

For context, solar energy here swings from a low near 2.67 kWh/m² to a high of 6.49 kWh/m² in December across the year — September's 4.59 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Is September a good time to visit Frederico Westphalen?

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

6.9
Sightseeing
2nd-best month of the year
6.1
Beach & pool
5th-best month of the year

September is a reasonable time to visit Frederico Westphalen for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Frederico Westphalen in September

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

In September, Frederico Westphalen sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Frederico Westphalen in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Frederico Westphalen peaks around January 22 at about 14 (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 highHighModerateHighVery highExtremeJan 22UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May6High
Jun4Moderate
Jul5Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov11Extreme
Dec13Extreme

Air quality in Frederico Westphalen in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Frederico Westphalen is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1616 µg/m³Mar 116 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb6Good
Mar6Good
Apr7Good
May7Good
Jun7Good
Jul8Good
Aug11Good
Sep17Moderate
Oct11Good
Nov8Good
Dec7Good
Location & terrain

Where is Frederico Westphalen?

Frederico Westphalen sits at 27.4°S, 53.4°W, 528 m above sea level, in Brazil. The nearest listed city is Itapiranga, 38 km away.

Topography around Frederico Westphalen

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

Within 3 km, the terrain around Frederico Westphalen has significant variations in elevation — a maximum elevation change of 259 m around an average of 501 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 379 m; within 80 km, large variations in elevation — a maximum elevation change of 703 m.

The land around Frederico Westphalen is covered by trees (45%) and grassland (20%) within 3 km, trees (47%) and cropland (32%) within 16 km, and trees (50%) and cropland (40%) within 80 km.

3 km
259 m
16 km
379 m
80 km
703 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Itapiranga 38 km · Palmitos 40 km · Três Passos 54 km · Palmeira das Missões 61 km · Pinhalzinho 69 km · Maravilha 70 km · São Miguel d'Oeste 72 km · El Soberbio 80 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 Frederico Westphalen (-27.3592°, -53.3944°, elevation 528 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).