Bermejo weather in September

In September, Bermejo sees average daytime highs of 28°C and overnight lows near 13°C, with 27 mm of rain across 4.8 wet days and about 11.9 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 29°C by the end. The sky is clear or mostly clear about 51% 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 Bermejo's 3rd-clearest and 1st-windiest month. For the whole year in context, see Bermejo's year-round climate.

Daytime high
28°
6th warmest
Overnight low
13°
5th coldest
Rainfall
27 mm
4.8 wet days
Daylight
11 h 54 min
6:16 AM – 6:08 PM
Cloud cover
44%
3rd clearest
Wind
6 km/h
1st windiest
Solar energy
5.17 kWh/m²
Travel score
6.8
out of 10

Bermejo is town of Bolivia.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 29°C by the end.

A typical September day in Bermejo reaches about 28°C in the afternoon and slips back to 13°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 36°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
12811
22812
32812
42812
52812
62812
72812
82812
92812
102812
112813
122813
132813
142813
152813
162813
172813
182913
192913
202913
212914
222914
232914
242914
252914
262914
272914
282915
292915
302915

How September really feels in Bermejo

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.

Bermejo weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°27619.113.23.7
Feb29° / 20°26417.812.84.1
Mar28° / 19°23917.912.24.9
Apr25° / 16°11211.611.56.4
May22° / 13°407.210.97.1
Jun21° / 10°133.410.67.5
Jul22° / 102.910.78.0
Aug25° / 10°112.611.28.4
Sep28° / 13°274.811.96.8
Oct30° / 17°9811.512.54.8
Nov30° / 18°16414.313.14.2
Dec31° / 20°26617.913.43.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17129
27129
37030
46931
56931
66733
76733
86634
96535
106535
116535
126634
136535
146436
156535
166436
176436
186436
196337
206337
216337
226337
236238
246139
256040
265842
275743
285545
295545
305446

Chance of precipitation in September

Any precipitation

Bermejo gets around 27 mm of rain over 4.8 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 16% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
110
210
310
411
511
612
712
812
912
1013
1113
1213
1314
1414
1515
1616
1716
1817
1918
2018
2119
2219
2320
2421
2522
2623
2724
2825
2926
3026

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 66% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1731980
2731980
3731980
4721981
5721891
6721891
7721891
8731791
9731791
10731791
11731791
12721891
13721891
14721891
157019101
167019101
177019101
186820111
196621112
206521122
216322132
226123142
236023152
245923162
255524183
265424193
275324203
285124214
295024224
304824235

Wind in September

Winds average 6 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:31 AM to 6:01 AM, and sunset from 6:03 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:316:03
211.66:306:04
311.66:296:04
411.66:286:04
511.66:276:04
611.66:266:05
711.76:256:05
811.76:246:05
911.76:236:06
1011.76:226:06
1111.86:216:06
1211.86:206:07
1311.86:196:07
1411.86:186:07
1511.86:176:07
1611.96:166:08
1711.96:156:08
1811.96:136:08
1911.96:126:09
2012.06:116:09
2112.06:106:09
2212.06:096:10
2312.06:086:10
2412.16:076:10
2512.16:066:11
2612.16:056:11
2712.16:046:11
2812.16:036:12
2912.26:026:12
3012.26:016:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.17 kWh/m².

For context, solar energy here swings from a low near 3 kWh/m² to a high of 5.49 kWh/m² in January across the year — September's 5.17 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.2Bright
305.2Bright
Planning a trip in September

Hazard calendar for Bermejo

In seasonPeak

None of Bermejo's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Bermejo'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 September a good time to visit Bermejo?

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

6.8
Sightseeing
5th-best month of the year
7.9
Beach & pool
1st-best month of the year

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

What to pack for Bermejo in September

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

In September, Bermejo sees daytime highs around 28°C and nights near 13°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

UV index in Bermejo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bermejo peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 6 (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 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar13Extreme
Apr9Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep10Very high
Oct9Very high
Nov13Extreme
Dec14Extreme

Air quality in Bermejo 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 Bermejo is worst in November — around 24 µg/m³ PM2.5 (moderate), about 6.0× the cleanest month (May, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1224 µg/m³May 174 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar6Good
Apr5Good
May4Good
Jun5Good
Jul5Good
Aug12Good
Sep18Moderate
Oct20Moderate
Nov24Moderate
Dec9Good
Location & terrain

Where is Bermejo?

Bermejo sits at 22.7°S, 64.3°W, 416 m above sea level, in Bolivia. The nearest listed city is San Ramón de la Nueva Orán, 45 km away.

Profesor Salvador MazzaYacuiba

Topography around Bermejo

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

Within 3 km, the terrain around Bermejo has significant variations in elevation — a maximum elevation change of 274 m around an average of 438 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 820 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,430 m.

The land around Bermejo is covered by trees (46%) within 3 km, trees (79%) within 16 km, and trees (73%) within 80 km.

3 km
274 m
16 km
820 m
80 km
4,430 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: San Ramón de la Nueva Orán 45 km · General Mosconi 56 km · Embarcación 58 km · Tartagal 60 km · Pichanal 66 km · Santa Rosa 74 km · Profesor Salvador Mazza 101 km · Yacuiba 105 km

Bolivia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 40% of US
price level, 2025
GDP per capita
$5,148
2025
Happiness
5.8 / 10
World Happiness, 2025
Homicide rate
4.4
per 100k, 2023
Road deaths
21.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 521
Religion
Roman Catholic 65%Protestant 20%none 6%other 5%

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 Bermejo (-22.7321°, -64.3372°, elevation 416 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).