Lapa weather in September

In September, Lapa sees average daytime highs of 22°C and overnight lows near 12°C, with 145 mm of rain across 11 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°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 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Lapa's 5th-clearest and 1st-windiest month. For the whole year in context, see Lapa's year-round climate.

Daytime high
22°
8th warmest
Overnight low
12°
5th coldest
Rainfall
145 mm
11 wet days
Daylight
11 h 54 min
7:18 AM – 7:09 PM
Cloud cover
65%
5th clearest
Wind
12 km/h
1st windiest
Solar energy
4.25 kWh/m²
Travel score
6.4
out of 10

Lapa 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 22°C through the month.

A typical September day in Lapa reaches about 22°C in the afternoon and slips back to 12°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 29°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12212
22212
32212
42212
52212
62212
72212
82212
92212
102212
112212
122212
132212
142212
152212
162212
172212
182213
192213
202213
212213
222213
232213
242213
252213
262213
272213
282213
292213
302213

Lapa weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°2032113.44.8
Feb27° / 18°17618.712.94.9
Mar26° / 17°12015.612.25.8
Apr24° / 15°788.911.46.9
May21° / 12°998.510.86.5
Jun20° / 11°1129.110.46.3
Jul19° / 10°917.810.66.6
Aug21° / 11°877.911.17.0
Sep22° / 12°1451111.86.4
Oct23° / 14°15014.812.65.9
Nov25° / 15°13214.213.36.0
Dec26° / 17°16818.113.65.3

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 9% of September, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25347
35248
45050
54951
64753
74654
84555
94456
104357
114159
124060
134060
143961
153961
163862
173763
183763
193664
203565
213466
223367
233367
243268
253169
263169
273070
282971
292971
302971

Chance of precipitation in September

Any precipitation

Lapa gets around 145 mm of rain over 11 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 36% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
127
227
327
428
528
628
729
830
930
1031
1132
1232
1333
1434
1535
1636
1737
1838
1939
2040
2141
2242
2343
2444
2544
2645
2745
2846
2946
3046

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 (%)
1623440
2613540
3603640
4583750
5583750
6563860
7563860
8563860
9543970
10543970
11543970
12533980
13523981
14513991
15513991
165039101
175039101
185138101
195038111
205038111
215038121
224938131
234838131
244738141
254638150
264538160
274438170
284338180
294238191
304138211

Wind in September

Winds average 12 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 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 42 minutes over September. Sunrise moves from 7:35 AM to 7:02 AM, and sunset from 7:03 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:357:03
211.57:337:03
311.57:327:03
411.57:317:04
511.67:307:04
611.67:297:05
711.67:287:05
811.67:277:05
911.77:267:06
1011.77:257:06
1111.77:237:07
1211.77:227:07
1311.87:217:08
1411.87:207:08
1511.87:197:08
1611.97:187:09
1711.97:177:09
1811.97:157:10
1911.97:147:10
2012.07:137:10
2112.07:127:11
2212.07:117:11
2312.07:107:12
2412.17:087:12
2512.17:077:12
2612.17:067:13
2712.17:057:13
2812.27:047:14
2912.27:037:14
3012.27:027:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.25 kWh/m².

For context, solar energy here swings from a low near 2.83 kWh/m² to a high of 5.75 kWh/m² in December across the year — September's 4.25 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.2Bright
264.2Bright
274.2Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Is September a good time to visit Lapa?

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

6.4
Sightseeing
5th-best month of the year
4.5
Beach & pool
8th-best month of the year

September is a reasonable time to visit Lapa for sightseeing.

What to pack for Lapa in September

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

In September, Lapa sees daytime highs around 22°C and nights near 12°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

UV index in Lapa 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 Lapa peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 18UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun6High
Jul5High
Aug7High
Sep7Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Lapa 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 Lapa is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1118 µg/m³Dec 2110 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar11Good
Apr12Good
May14Moderate
Jun14Moderate
Jul16Moderate
Aug17Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Lapa?

Lapa sits at 25.8°S, 49.7°W, 929 m above sea level, in Brazil. The nearest listed city is Contenda, 21 km away.

Topography around Lapa

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

Within 3 km, the terrain around Lapa has only modest variations in elevation — a maximum elevation change of 192 m around an average of 911 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 239 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,528 m.

The land around Lapa is covered by trees (43%) and grassland (24%) within 3 km, trees (46%) and cropland (39%) within 16 km, and trees (64%) and cropland (24%) within 80 km.

3 km
192 m
16 km
239 m
80 km
1,528 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Contenda 21 km · Quitandinha 25 km · Araucária 36 km · Rio Negro 38 km · Mafra 39 km · Mandirituba 39 km · Campo Largo 39 km · Fazenda Rio Grande 43 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 Lapa (-25.7697°, -49.7158°, elevation 929 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).