Yacuiba weather in September

In September, Yacuiba sees average daytime highs of 28°C and overnight lows near 14°C, with 24 mm of rain across 4.7 wet days and about 11.9 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 48% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Yacuiba's 3rd-clearest and 1st-windiest month. For the whole year in context, see Yacuiba's year-round climate.

Daytime high
28°
6th warmest
Overnight low
14°
5th coldest
Rainfall
24 mm
4.7 wet days
Daylight
11 h 54 min
6:13 AM – 6:05 PM
Cloud cover
46%
3rd clearest
Wind
8 km/h
1st windiest
Solar energy
5.18 kWh/m²
Travel score
7.3
out of 10

Yacuiba is border city 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

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Yacuiba reaches about 28°C in the afternoon and slips back to 14°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 35°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)
12713
22713
32713
42713
52713
62713
72713
82714
92714
102714
112714
122714
132714
142714
152714
162814
172814
182814
192815
202815
212815
222815
232815
242815
252815
262815
272815
282816
292816
302816

How September really feels in Yacuiba

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.

Yacuiba 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°23918.213.24.0
Feb29° / 19°22416.112.84.4
Mar28° / 19°18515.712.25.3
Apr25° / 16°8611.311.56.5
May22° / 13°407.8117.0
Jun21° / 10°184.810.77.3
Jul21° / 143.710.87.8
Aug25° / 11°102.711.28.4
Sep28° / 14°244.711.97.3
Oct29° / 17°8610.812.55.3
Nov30° / 18°15013.213.14.7
Dec30° / 19°21416.713.34.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17129
27030
36931
46931
56832
66634
76634
86535
96436
106436
116436
126337
136337
146337
156337
166337
176337
186337
196238
206238
216238
226139
236040
245941
255842
265743
275644
285545
295347
305347

Chance of precipitation in September

Any precipitation

Yacuiba gets around 24 mm of rain over 4.7 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 25% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
110
211
311
411
512
612
712
812
912
1012
1113
1213
1313
1413
1514
1615
1715
1816
1916
2017
2118
2219
2319
2420
2521
2622
2723
2823
2924
3025

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 (%)
1732070
2732070
3712180
4712180
5712180
6712180
7712180
8712180
9712180
10712180
11712180
12712180
13712180
14702190
15702190
16702190
176921100
186921100
196721111
206621121
216422131
226322141
236222151
246023161
255823172
265723182
275424202
285324212
295124223
305025223

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

Across September, 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.

051015151015202530
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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 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 36 minutes over September. Sunrise moves from 6:28 AM to 5:59 AM, and sunset from 6:01 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:286:01
211.66:276:01
311.66:266:02
411.66:256:02
511.66:246:02
611.76:236:03
711.76:226:03
811.76:216:03
911.76:206:03
1011.76:196:04
1111.86:186:04
1211.86:176:04
1311.86:166:04
1411.86:156:05
1511.96:146:05
1611.96:136:05
1711.96:126:06
1811.96:116:06
1911.96:106:06
2012.06:096:06
2112.06:086:07
2212.06:076:07
2312.06:066:07
2412.06:056:08
2512.16:046:08
2612.16:036:08
2712.16:026:08
2812.16:016:09
2912.26:006:09
3012.25:596:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.18 kWh/m².

For context, solar energy here swings from a low near 3.06 kWh/m² to a high of 5.76 kWh/m² in January across the year — September's 5.18 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
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Yacuiba

In seasonPeak

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

Yacuiba'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 Yacuiba?

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

7.3
Sightseeing
3rd-best month of the year
7.7
Beach & pool
1st-best month of the year

September is one of the better times to visit Yacuiba for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Yacuiba in September

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

In September, Yacuiba sees daytime highs around 28°C and nights near 14°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

UV index in Yacuiba 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 Yacuiba peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 19UV 15Jul 11UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May8Very high
Jun6High
Jul6High
Aug8Very high
Sep10Very high
Oct10Very high
Nov13Extreme
Dec14Extreme

Air quality in Yacuiba 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 Yacuiba is worst in September — around 23 µg/m³ PM2.5 (moderate), about 4.7× the cleanest month (May, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateSep 2022 µg/m³May 215 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb9Good
Mar8Good
Apr6Good
May5Good
Jun5Good
Jul6Good
Aug10Good
Sep23Moderate
Oct18Moderate
Nov17Moderate
Dec11Good
Location & terrain

Where is Yacuiba?

Yacuiba sits at 22.0°S, 63.7°W, 629 m above sea level, in Bolivia. The nearest listed city is Profesor Salvador Mazza, 4.0 km away.

VillamontesBermejoTarijaEmbarcaciónSan Ramón de la Nueva Orán

Topography around Yacuiba

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

Within 3 km, the terrain around Yacuiba has significant variations in elevation — a maximum elevation change of 438 m around an average of 675 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 981 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.

The land around Yacuiba is covered by trees (64%) and artificial surfaces (24%) within 3 km, trees (87%) within 16 km, and trees (81%) within 80 km.

3 km
438 m
16 km
981 m
80 km
1,879 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Profesor Salvador Mazza 4.0 km · Tartagal 57 km · General Mosconi 66 km · Villamontes 87 km · Bermejo 105 km · Tarija 121 km · Embarcación 140 km · San Ramón de la Nueva Orán 141 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 Yacuiba (-22.0164°, -63.6775°, elevation 629 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).