Rocha weather in September

In September, Rocha sees average daytime highs of 17°C and overnight lows near 10°C, with 95 mm of rain across 8.8 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 9th-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 30% 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 Rocha's 8th-clearest and 1st-windiest month. For the whole year in context, see Rocha's year-round climate.

Daytime high: 17°; 9th warmest
Overnight low: 10°; 4th coldest
Rainfall: 95 mm; 8.8 wet days
Daylight: 11 h 48 min; 7:38 AM – 7:25 PM
Cloud cover: 60%; 8th clearest
Wind: 18 km/h; 1st windiest
Solar energy: 4.36 kWh/m²
Travel score: 5.4; out of 10

Rocha is city in Uruguay.

Density: 1,402/km²; people per km²
Founded: 1793

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

← August Rocha year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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 Rocha reaches about 17°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 21°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	17	17	17	17	17	17	17	17	17	17	17	17	17	17
Avg low (°C)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11

	Avg high (°C)	Avg low (°C)
1	16	10
2	16	10
3	16	10
4	16	10
5	16	10
6	16	10
7	16	10
8	16	10
9	16	10
10	16	10
11	16	10
12	16	10
13	16	10
14	16	10
15	16	10
16	16	10
17	17	10
18	17	10
19	17	10
20	17	10
21	17	10
22	17	10
23	17	10
24	17	10
25	17	10
26	17	10
27	17	10
28	17	11
29	17	11
30	17	11

Rocha weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	26° / 18°	82	8.9	14	7.1
Feb	25° / 19°	98	9.6	13.3	6.8
Mar	24° / 17°	98	9.8	12.3	7.0
Apr	21° / 15°	110	8.8	11.2	6.6
May	18° / 12°	85	8.1	10.2	6.0
Jun	15° / 9°	99	8.3	9.7	4.8
Jul	14° / 8°	97	8.6	9.9	4.3
Aug	16° / 9°	103	8.5	10.7	4.9
Sep	17° / 10°	95	8.8	11.8	5.4
Oct	19° / 12°	107	9.8	12.9	6.1
Nov	21° / 14°	96	8.6	13.8	6.8
Dec	24° / 17°	85	8.5	14.3	7.3

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 14% of September, with mostly cloudy or overcast conditions the remaining 56%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	40	41	42	42	43	43	43	44	44	44	45	44	44	44	45	46	46	46	46	46	45	45	45	45	45	43	44	44	44	43
Cloudier (%)	60	59	58	58	57	57	57	56	56	56	55	56	56	56	55	54	54	54	54	54	55	55	55	55	55	57	56	56	56	57

	Clearer (%)	Cloudier (%)
1	40	60
2	41	59
3	42	58
4	42	58
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	45	55
12	44	56
13	44	56
14	44	56
15	45	55
16	46	54
17	46	54
18	46	54
19	46	54
20	46	54
21	45	55
22	45	55
23	45	55
24	45	55
25	45	55
26	43	57
27	44	56
28	44	56
29	44	56
30	43	57

Chance of precipitation in September

Any precipitation

Rocha gets around 95 mm of rain over 8.8 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 29% and peaks near 30% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	30	30	30	30	30	30	30	30	30	29	29	29	29	29	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28

	Rain chance (%)
1	30
2	30
3	30
4	30
5	30
6	30
7	30
8	30
9	30
10	29
11	29
12	29
13	29
14	29
15	28
16	28
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28

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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	82	82	82	82	82	82	82	82	82	81	81	81	81	81	81	81	81	81	82	81	81	80	80	79	78	77	77	76	75	74
Comfortable (%)	14	14	14	14	14	14	14	14	14	15	15	15	15	15	15	15	15	15	15	16	16	17	17	18	19	20	20	21	22	23
Humid (%)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	3	3	3	3	3	3	3	3	3	3	3	3

	Dry (%)	Comfortable (%)	Humid (%)
1	82	14	4
2	82	14	4
3	82	14	4
4	82	14	4
5	82	14	4
6	82	14	4
7	82	14	4
8	82	14	4
9	82	14	4
10	81	15	4
11	81	15	4
12	81	15	4
13	81	15	4
14	81	15	4
15	81	15	4
16	81	15	4
17	81	15	4
18	81	15	4
19	82	15	3
20	81	16	3
21	81	16	3
22	80	17	3
23	80	17	3
24	79	18	3
25	78	19	3
26	77	20	3
27	77	20	3
28	76	21	3
29	75	22	3
30	74	23	3

Wind in September

Winds average 18 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 18 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	18	light breeze
2	18	light breeze
3	18	light breeze
4	18	light breeze
5	18	light breeze
6	18	light breeze
7	18	light breeze
8	18	light breeze
9	18	light breeze
10	18	light breeze
11	18	light breeze
12	18	light breeze
13	18	light breeze
14	18	light breeze
15	18	light breeze
16	18	light breeze
17	18	light breeze
18	18	light breeze
19	18	light breeze
20	18	light breeze
21	18	light breeze
22	18	light breeze
23	18	light breeze
24	18	light breeze
25	18	light breeze
26	18	light breeze
27	18	light breeze
28	18	light breeze
29	18	light breeze
30	18	light 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 8:00 AM to 7:18 AM, and sunset from 7:14 PM to 7:36 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	11.2	11.3	11.3	11.4	11.4	11.4	11.5	11.5	11.5	11.6	11.6	11.6	11.7	11.7	11.8	11.8	11.8	11.9	11.9	11.9	12.0	12.0	12.0	12.1	12.1	12.2	12.2	12.2	12.3	12.3
Sunrise (AM)	8:00	7:58	7:57	7:56	7:54	7:53	7:51	7:50	7:48	7:47	7:45	7:44	7:42	7:41	7:39	7:38	7:37	7:35	7:34	7:32	7:31	7:29	7:28	7:26	7:25	7:23	7:22	7:20	7:19	7:18
Sunset (PM)	7:14	7:15	7:16	7:17	7:17	7:18	7:19	7:19	7:20	7:21	7:22	7:22	7:23	7:24	7:25	7:25	7:26	7:27	7:27	7:28	7:29	7:30	7:30	7:31	7:32	7:33	7:33	7:34	7:35	7:36

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.2	8:00	7:14
2	11.3	7:58	7:15
3	11.3	7:57	7:16
4	11.4	7:56	7:17
5	11.4	7:54	7:17
6	11.4	7:53	7:18
7	11.5	7:51	7:19
8	11.5	7:50	7:19
9	11.5	7:48	7:20
10	11.6	7:47	7:21
11	11.6	7:45	7:22
12	11.6	7:44	7:22
13	11.7	7:42	7:23
14	11.7	7:41	7:24
15	11.8	7:39	7:25
16	11.8	7:38	7:25
17	11.8	7:37	7:26
18	11.9	7:35	7:27
19	11.9	7:34	7:27
20	11.9	7:32	7:28
21	12.0	7:31	7:29
22	12.0	7:29	7:30
23	12.0	7:28	7:30
24	12.1	7:26	7:31
25	12.1	7:25	7:32
26	12.2	7:23	7:33
27	12.2	7:22	7:33
28	12.2	7:20	7:34
29	12.3	7:19	7:35
30	12.3	7:18	7:36

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.36 kWh/m².

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 7.41 kWh/m² in December across the year — September's 4.36 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	3.7	3.7	3.7	3.8	3.8	3.9	3.9	4.0	4.0	4.1	4.1	4.2	4.2	4.3	4.3	4.4	4.4	4.5	4.5	4.6	4.6	4.7	4.7	4.8	4.8	4.8	4.8	4.9	4.9	4.9
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.7	Moderate
2	3.7	Moderate
3	3.7	Moderate
4	3.8	Moderate
5	3.8	Moderate
6	3.9	Moderate
7	3.9	Moderate
8	4.0	Moderate
9	4.0	Bright
10	4.1	Bright
11	4.1	Bright
12	4.2	Bright
13	4.2	Bright
14	4.3	Bright
15	4.3	Bright
16	4.4	Bright
17	4.4	Bright
18	4.5	Bright
19	4.5	Bright
20	4.6	Bright
21	4.6	Bright
22	4.7	Bright
23	4.7	Bright
24	4.8	Bright
25	4.8	Bright
26	4.8	Bright
27	4.8	Bright
28	4.9	Bright
29	4.9	Bright
30	4.9	Bright

Planning a trip in September

Is September a good time to visit Rocha?

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

5.4

Sightseeing

9th-best month of the year

1.0

Beach & pool

9th-best month of the year

September is a reasonable time to visit Rocha for sightseeing.

What to pack for Rocha in September

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

In September, Rocha sees daytime highs around 17°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Rocha 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 25 km away) is warmest in February at about 23°C and coldest in July near 12°C.

It's comfortable for a long swim from Dec 14 to Apr 16 — about 4.1 months when the water holds above 20°C.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	22	23	22	20	17	14	12	12	13	15	18	20
Comfort	Refreshing	Refreshing	Refreshing	Refreshing	Cool	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Refreshing

	Sea temperature (°C)	Comfort
Jan	22	Refreshing
Feb	23	Refreshing
Mar	22	Refreshing
Apr	20	Refreshing
May	17	Cool
Jun	14	Bracing
Jul	12	Bracing
Aug	12	Bracing
Sep	13	Bracing
Oct	15	Cool
Nov	18	Cool
Dec	20	Refreshing

UV index in Rocha 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 Rocha peaks around January 16 at about 12 (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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	12	10	6	3	3	3	4	6	8	11	12
Level	Extreme	Extreme	Very high	High	Moderate	Moderate	Moderate	Moderate	High	Very high	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	12	Extreme
Mar	10	Very high
Apr	6	High
May	3	Moderate
Jun	3	Moderate
Jul	3	Moderate
Aug	4	Moderate
Sep	6	High
Oct	8	Very high
Nov	11	Extreme
Dec	12	Extreme

Location & terrain

Where is Rocha?

Rocha sits at 34.5°S, 54.3°W, 8 m above sea level, in Uruguay. The nearest listed city is La Paloma, 25 km away.

Topography around Rocha

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

Within 3 km, the terrain around Rocha has only modest variations in elevation — a maximum elevation change of 54 m around an average of 21 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 324 m; within 80 km, significant variations in elevation — a maximum elevation change of 498 m.

The land around Rocha is covered by grassland (54%), trees (21%) and artificial surfaces (20%) within 3 km, grassland (64%) and trees (21%) within 16 km, and grassland (47%) and water (31%) within 80 km.

3 km

54 m

grassland 54%

16 km

324 m

grassland 64%

80 km

498 m

grassland 47%

treesgrasslandcroplandartificial surfaceswaterwetland

← August Rocha year-round climate October →Best places to visit in September

September weather nearby: La Paloma 25 km · San Carlos 64 km · Maldonado 73 km · Punta del Este 76 km · Minas 84 km · Piriapolis 96 km · Santa Vitória do Palmar 139 km · Treinta y Tres 139 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

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 Rocha (-34.48°, -54.3306°, elevation 8 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).

	Avg high (°C)	Avg low (°C)
1	16	10
2	16	10
3	16	10
4	16	10
5	16	10
6	16	10
7	16	10
8	16	10
9	16	10
10	16	10
11	16	10
12	16	10
13	16	10
14	16	10
15	16	10
16	16	10
17	17	10
18	17	10
19	17	10
20	17	10
21	17	10
22	17	10
23	17	10
24	17	10
25	17	10
26	17	10
27	17	10
28	17	11
29	17	11
30	17	11

	Clearer (%)	Cloudier (%)
1	40	60
2	41	59
3	42	58
4	42	58
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	45	55
12	44	56
13	44	56
14	44	56
15	45	55
16	46	54
17	46	54
18	46	54
19	46	54
20	46	54
21	45	55
22	45	55
23	45	55
24	45	55
25	45	55
26	43	57
27	44	56
28	44	56
29	44	56
30	43	57

	Rain chance (%)
1	30
2	30
3	30
4	30
5	30
6	30
7	30
8	30
9	30
10	29
11	29
12	29
13	29
14	29
15	28
16	28
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28

	Dry (%)	Comfortable (%)	Humid (%)
1	82	14	4
2	82	14	4
3	82	14	4
4	82	14	4
5	82	14	4
6	82	14	4
7	82	14	4
8	82	14	4
9	82	14	4
10	81	15	4
11	81	15	4
12	81	15	4
13	81	15	4
14	81	15	4
15	81	15	4
16	81	15	4
17	81	15	4
18	81	15	4
19	82	15	3
20	81	16	3
21	81	16	3
22	80	17	3
23	80	17	3
24	79	18	3
25	78	19	3
26	77	20	3
27	77	20	3
28	76	21	3
29	75	22	3
30	74	23	3

	Avg high (°C)	Avg low (°C)
1	16	10
2	16	10
3	16	10
4	16	10
5	16	10
6	16	10
7	16	10
8	16	10
9	16	10
10	16	10
11	16	10
12	16	10
13	16	10
14	16	10
15	16	10
16	16	10
17	17	10
18	17	10
19	17	10
20	17	10
21	17	10
22	17	10
23	17	10
24	17	10
25	17	10
26	17	10
27	17	10
28	17	11
29	17	11
30	17	11

	Clearer (%)	Cloudier (%)
1	40	60
2	41	59
3	42	58
4	42	58
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	45	55
12	44	56
13	44	56
14	44	56
15	45	55
16	46	54
17	46	54
18	46	54
19	46	54
20	46	54
21	45	55
22	45	55
23	45	55
24	45	55
25	45	55
26	43	57
27	44	56
28	44	56
29	44	56
30	43	57

	Rain chance (%)
1	30
2	30
3	30
4	30
5	30
6	30
7	30
8	30
9	30
10	29
11	29
12	29
13	29
14	29
15	28
16	28
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28

	Dry (%)	Comfortable (%)	Humid (%)
1	82	14	4
2	82	14	4
3	82	14	4
4	82	14	4
5	82	14	4
6	82	14	4
7	82	14	4
8	82	14	4
9	82	14	4
10	81	15	4
11	81	15	4
12	81	15	4
13	81	15	4
14	81	15	4
15	81	15	4
16	81	15	4
17	81	15	4
18	81	15	4
19	82	15	3
20	81	16	3
21	81	16	3
22	80	17	3
23	80	17	3
24	79	18	3
25	78	19	3
26	77	20	3
27	77	20	3
28	76	21	3
29	75	22	3
30	74	23	3

	Avg high (°C)	Avg low (°C)
1	16	10
2	16	10
3	16	10
4	16	10
5	16	10
6	16	10
7	16	10
8	16	10
9	16	10
10	16	10
11	16	10
12	16	10
13	16	10
14	16	10
15	16	10
16	16	10
17	17	10
18	17	10
19	17	10
20	17	10
21	17	10
22	17	10
23	17	10
24	17	10
25	17	10
26	17	10
27	17	10
28	17	11
29	17	11
30	17	11

	Clearer (%)	Cloudier (%)
1	40	60
2	41	59
3	42	58
4	42	58
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	45	55
12	44	56
13	44	56
14	44	56
15	45	55
16	46	54
17	46	54
18	46	54
19	46	54
20	46	54
21	45	55
22	45	55
23	45	55
24	45	55
25	45	55
26	43	57
27	44	56
28	44	56
29	44	56
30	43	57

	Rain chance (%)
1	30
2	30
3	30
4	30
5	30
6	30
7	30
8	30
9	30
10	29
11	29
12	29
13	29
14	29
15	28
16	28
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28

	Dry (%)	Comfortable (%)	Humid (%)
1	82	14	4
2	82	14	4
3	82	14	4
4	82	14	4
5	82	14	4
6	82	14	4
7	82	14	4
8	82	14	4
9	82	14	4
10	81	15	4
11	81	15	4
12	81	15	4
13	81	15	4
14	81	15	4
15	81	15	4
16	81	15	4
17	81	15	4
18	81	15	4
19	82	15	3
20	81	16	3
21	81	16	3
22	80	17	3
23	80	17	3
24	79	18	3
25	78	19	3
26	77	20	3
27	77	20	3
28	76	21	3
29	75	22	3
30	74	23	3