Dolores weather in September

In September, Dolores sees average daytime highs of 20°C and overnight lows near 10°C, with 81 mm of rain across 7.1 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 21°C by the end. The sky is clear or mostly clear about 39% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Dolores's 8th-clearest and 1st-windiest month. For the whole year in context, see Dolores's year-round climate.

Daytime high
20°
8th warmest
Overnight low
10°
4th coldest
Rainfall
81 mm
7.1 wet days
Daylight
11 h 48 min
7:53 AM – 7:41 PM
Cloud cover
52%
8th clearest
Wind
14 km/h
1st windiest
Solar energy
4.57 kWh/m²
Travel score
6.7
out of 10

Dolores is city in Uruguay.

Density
2,564/km²
people per km²
Founded
1801

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 19°C in the first days to 21°C by the end.

A typical September day in Dolores reaches about 20°C in the afternoon and slips back to 10°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, September runs about 2°C warmer than August and about 3°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1199
2199
31910
41910
51910
61910
71910
81910
91910
101910
111910
121910
131910
142010
152010
162010
172010
182010
192010
202010
212010
222010
232010
242011
252011
262011
272111
282111
292111
302111

Dolores weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°987.2145.5
Feb29° / 19°1118.113.26.0
Mar27° / 17°1147.712.37.1
Apr23° / 14°1218.411.27.2
May19° / 11°766.310.36.6
Jun16° / 696.89.85.5
Jul16° / 646.2105.2
Aug18° / 866.810.86.3
Sep20° / 10°817.111.86.7
Oct23° / 13°1229.612.87.0
Nov26° / 15°1037.113.77.3
Dec29° / 18°1157.914.26.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% 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 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25050
35149
45149
55248
65248
75347
85347
95446
105644
115644
125743
135842
145743
155743
165842
175842
185842
195644
205644
215545
225545
235446
245347
255248
265149
275149
285050
295050
304951

Chance of precipitation in September

Any precipitation

Dolores gets around 81 mm of rain over 7.1 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 24% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
326
426
525
625
725
825
924
1024
1123
1223
1323
1422
1522
1622
1722
1822
1922
2022
2122
2222
2323
2423
2524
2625
2725
2826
2926
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 77% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1771481
2771391
3771391
4771391
5781381
6781381
7781381
8781381
9781381
10781381
11781381
12781381
13781381
14791371
15791371
16791371
17791371
18801361
19791461
20791461
21791461
22781561
23771661
24761761
25761761
26751861
27741961
28732061
29712171
30712171

Wind in September

Winds average 14 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 18 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 60 minutes over September. Sunrise moves from 8:14 AM to 7:33 AM, and sunset from 7:31 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.38:147:31
211.38:137:31
311.38:127:32
411.48:107:33
511.48:097:33
611.48:087:34
711.58:067:35
811.58:057:36
911.58:037:36
1011.68:027:37
1111.68:017:38
1211.77:597:38
1311.77:587:39
1411.77:567:40
1511.87:557:40
1611.87:537:41
1711.87:527:42
1811.97:507:42
1911.97:497:43
2011.97:487:44
2112.07:467:45
2212.07:457:45
2312.07:437:46
2412.17:427:47
2512.17:407:47
2612.27:397:48
2712.27:387:49
2812.27:367:50
2912.37:357:50
3012.37:337:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.57 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 7.41 kWh/m² in December across the year — September's 4.57 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
34.0Moderate
44.0Bright
54.1Bright
64.1Bright
74.2Bright
84.2Bright
94.3Bright
104.3Bright
114.4Bright
124.5Bright
134.5Bright
144.5Bright
154.6Bright
164.6Bright
174.7Bright
184.7Bright
194.8Bright
204.8Bright
214.8Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Is September a good time to visit Dolores?

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

6.7
Sightseeing
5th-best month of the year
3.3
Beach & pool
8th-best month of the year

September is a reasonable time to visit Dolores for sightseeing.

What to pack for Dolores in September

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

In September, Dolores sees daytime highs around 20°C and nights near 10°C. Worth packing: sun protection. About 7 days see rain.

sun protection

Sea temperature near Dolores in September

The nearest coast averages about 15°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 67 km away) is warmest in January at about 25°C and coldest in July near 13°C.

It's comfortable for a long swim from Nov 8 to Apr 22 — about 5.5 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar24Refreshing
Apr21Refreshing
May17Cool
Jun14Bracing
Jul13Bracing
Aug14Bracing
Sep15Cool
Oct18Cool
Nov21Refreshing
Dec23Refreshing

UV index in Dolores 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 Dolores peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 13Jun 18UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Dolores?

Dolores sits at 33.5°S, 58.2°W, 22 m above sea level, in Uruguay. The nearest listed city is Mercedes, 35 km away.

MercedesFray BentosCarmeloGualeguaychúTigreYoung

Topography around Dolores

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

Within 3 km, the terrain around Dolores has only modest variations in elevation — a maximum elevation change of 30 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, only modest variations in elevation — a maximum elevation change of 165 m.

The land around Dolores is covered by cropland (37%) and grassland (25%) within 3 km, cropland (68%) within 16 km, and cropland (37%) and grassland (26%) within 80 km.

3 km
30 m
16 km
71 m
80 km
165 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Mercedes 35 km · Fray Bentos 47 km · Carmelo 53 km · Gualeguaychú 64 km · Zárate 98 km · Campana 98 km · Tigre 105 km · Young 108 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 Dolores (-33.5301°, -58.217°, elevation 22 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).