La Paz weather in September

In September, La Paz sees average daytime highs of 17°C and overnight lows near 10°C, with 84 mm of rain across 7.9 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 17°C through the month. The sky is clear or mostly clear about 32% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 12 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is La Paz's 9th-clearest and 1st-windiest month. For the whole year in context, see La Paz's year-round climate.

Daytime high
17°
9th warmest
Overnight low
10°
4th coldest
Rainfall
84 mm
7.9 wet days
Daylight
11 h 48 min
7:46 AM – 7:33 PM
Cloud cover
58%
9th clearest
Wind
16 km/h
1st windiest
Solar energy
4.35 kWh/m²
Travel score
5.9
out of 10

La Paz is city in Canelones, Uruguay.

Density
4,317/km²
people per km²
Founded
1872

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 17°C through the month.

A typical September day in La Paz reaches about 17°C in the afternoon and slips back to 10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 22°C. Set against its neighbours, September runs about 1°C warmer than August and about 3°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1179
2179
3179
4179
5179
6179
7179
8179
91710
101710
111710
121710
131710
141710
151710
161710
171710
181810
191810
201810
211810
221810
231810
241810
251810
261810
271810
281811
291811
301811

La Paz weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°767.214.17.1
Feb27° / 19°988.113.36.9
Mar25° / 17°968.312.37.3
Apr22° / 14°997.911.27.0
May18° / 11°807.410.26.2
Jun15° / 807.89.74.8
Jul14° / 847.49.94.4
Aug16° / 927.810.75.3
Sep17° / 10°847.911.85.9
Oct20° / 12°1139.312.96.5
Nov23° / 14°1018.113.87.3
Dec26° / 17°807.814.37.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% 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 54%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44456
54456
64555
74555
84654
94654
104654
114654
124753
134753
144852
154852
164852
174852
184852
194951
204951
214951
224852
234753
244753
254654
264654
274555
284555
294555
304555

Chance of precipitation in September

Any precipitation

La Paz gets around 84 mm of rain over 7.9 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 26% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
128
228
328
428
528
628
727
827
927
1026
1126
1226
1325
1425
1524
1624
1724
1824
1924
2024
2125
2225
2325
2426
2526
2627
2727
2827
2927
3027

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1821341
2821341
3821341
4821341
5821341
6821341
7831241
8831241
9831241
10831241
11831241
12831241
13831241
14831241
15831241
16831241
17831241
18831241
19831241
20831241
21841240
22841330
23841330
24831430
25821530
26821530
27811630
28801730
29791740
30781840

Wind in September

Winds average 16 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 16 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 12 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 66 minutes over September. Sunrise moves from 8:08 AM to 7:25 AM, and sunset from 7:22 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.28:087:22
211.38:067:22
311.38:057:23
411.38:037:24
511.48:027:25
611.48:007:25
711.57:597:26
811.57:577:27
911.57:567:28
1011.67:557:28
1111.67:537:29
1211.67:527:30
1311.77:507:31
1411.77:497:31
1511.77:477:32
1611.87:467:33
1711.87:447:34
1811.97:437:34
1911.97:417:35
2011.97:407:36
2112.07:387:37
2212.07:377:37
2312.07:357:38
2412.17:347:39
2512.17:327:40
2612.27:317:40
2712.27:297:41
2812.27:287:42
2912.37:267:43
3012.37:257:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.35 kWh/m².

For context, solar energy here swings from a low near 2.18 kWh/m² to a high of 7.47 kWh/m² in December across the year — September's 4.35 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.7Moderate
43.8Moderate
53.8Moderate
63.9Moderate
74.0Moderate
84.0Bright
94.0Bright
104.1Bright
114.2Bright
124.2Bright
134.3Bright
144.3Bright
154.4Bright
164.4Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.9Bright
Planning a trip in September

Is September a good time to visit La Paz?

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

5.9
Sightseeing
9th-best month of the year
1.7
Beach & pool
9th-best month of the year

September is a reasonable time to visit La Paz for sightseeing.

What to pack for La Paz in September

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

In September, La Paz sees daytime highs around 17°C and nights near 10°C. Little to plan around — just the basics. About 8 days see rain.

Sea temperature near La Paz in September

The nearest coast averages about 13°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 16 km away) is warmest in February at about 24°C and coldest in July near 11°C.

It's comfortable for a long swim from Nov 27 to Apr 9 — about 4.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb24Refreshing
Mar22Refreshing
Apr19Cool
May16Cool
Jun13Bracing
Jul11Bracing
Aug12Bracing
Sep13Bracing
Oct16Cool
Nov19Cool
Dec22Refreshing

UV index in La Paz in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in La Paz peaks around January 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 17UV 12Jun 18UV 2
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct7Very high
Nov11Extreme
Dec11Extreme
Location & terrain

Where is La Paz?

La Paz sits at 34.8°S, 56.2°W, 57 m above sea level, in Uruguay. The nearest listed city is Las Piedras, 3.0 km away.

Topography around La Paz

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

Within 3 km, the terrain around La Paz has only modest variations in elevation — a maximum elevation change of 63 m around an average of 50 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 130 m; within 80 km, significant variations in elevation — a maximum elevation change of 353 m.

The land around La Paz is covered by grassland (47%), artificial surfaces (25%) and trees (20%) within 3 km, grassland (41%) and artificial surfaces (21%) within 16 km, and water (36%), grassland (31%) and cropland (22%) within 80 km.

3 km
63 m
16 km
130 m
80 km
353 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Las Piedras 3.0 km · Progreso 10 km · Delta del Tigre 13 km · Montevideo 16 km · Paso de Carrasco 19 km · Barros Blancos 20 km · Pando 25 km · Canelones 27 km

Uruguay travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / I / L
230 V · 50 Hz
Prices
≈ 66% of US
price level, 2025
GDP per capita
$25,216
2025
Happiness
6.6 / 10
World Happiness, 2025
Homicide rate
11.2
per 100k, 2023
Road deaths
14.8
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 542
Religion
none 47%Roman Catholic 37%Protestant 15%atheist 10%

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 La Paz (-34.7603°, -56.2259°, elevation 57 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).