Ventanas weather in September

In September, Ventanas sees average daytime highs of 27°C and overnight lows near 21°C, with 365 mm of rain across 26.9 wet days and about 12 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Ventanas's 4th-clearest and 2nd-windiest month. For the whole year in context, see Ventanas's year-round climate.

Daytime high: 27°; 9th warmest
Overnight low: 21°; 2nd coldest
Rainfall: 365 mm; 26.9 wet days
Daylight: 12 hours; 6:12 AM – 6:12 PM
Cloud cover: 90%; 4th clearest
Wind: 4 km/h; 2nd windiest
Solar energy: 3.37 kWh/m²
Travel score: 3.7; out of 10

Ventanas is city of Los Ríos Province, Ecuador.

Density: 3,972/km²; people per km²
Founded: 1952

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

← August Ventanas 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 27°C through the month.

A typical September day in Ventanas reaches about 27°C in the afternoon and slips back to 21°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 29°C. Set against its neighbours, September runs on par with August and on par with 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)	26	26	26	26	26	26	26	26	26	26	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27
Avg low (°C)	20	20	20	20	20	20	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21

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

Ventanas 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	27° / 22°	983	30	12.1	3.3
Feb	28° / 22°	967	27.4	12	3.2
Mar	28° / 23°	944	30	12	3.1
Apr	28° / 23°	923	28.9	12	3.0
May	28° / 22°	840	29.2	11.9	3.4
Jun	26° / 21°	542	28.3	11.9	3.5
Jul	26° / 21°	506	28.4	11.9	3.7
Aug	26° / 20°	356	27.1	12	3.8
Sep	27° / 21°	365	26.9	12	3.7
Oct	27° / 21°	299	24.9	12	4.0
Nov	27° / 21°	267	21.6	12.1	4.3
Dec	27° / 22°	568	26.7	12.1	3.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 2% of September, with mostly cloudy or overcast conditions the remaining 98%.

	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 (%)	3	3	3	3	3	3	3	3	3	3	2	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1
Cloudier (%)	97	97	97	97	97	97	97	97	97	97	98	98	98	98	98	98	98	99	99	99	99	99	99	99	99	99	99	99	99	99

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	3	97
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	2	98
12	2	98
13	2	98
14	2	98
15	2	98
16	2	98
17	2	98
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

Chance of precipitation in September

Any precipitation

Ventanas gets around 365 mm of rain over 26.9 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 89% and peaks near 91% 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 (%)	87	87	87	87	87	88	88	88	89	89	90	90	90	90	91	91	91	91	91	91	91	91	91	90	90	90	90	89	89	89

	Rain chance (%)
1	87
2	87
3	87
4	87
5	87
6	88
7	88
8	88
9	89
10	89
11	90
12	90
13	90
14	90
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	91
23	91
24	90
25	90
26	90
27	90
28	89
29	89
30	89

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the muggy band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	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
Muggy (%)	73	73	73	72	72	72	71	71	70	70	69	69	68	67	66	65	64	64	63	62	61	60	60	59	59	58	58	58	57	57
Oppressive (%)	27	27	27	28	28	28	29	29	30	30	31	31	32	33	34	35	36	36	37	38	39	40	40	41	41	42	42	42	43	43

	Muggy (%)	Oppressive (%)
1	73	27
2	73	27
3	73	27
4	72	28
5	72	28
6	72	28
7	71	29
8	71	29
9	70	30
10	70	30
11	69	31
12	69	31
13	68	32
14	67	33
15	66	34
16	65	35
17	64	36
18	64	36
19	63	37
20	62	38
21	61	39
22	60	40
23	60	40
24	59	41
25	59	41
26	58	42
27	58	42
28	58	42
29	57	43
30	57	43

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 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)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over September. Sunrise moves from 6:18 AM to 6:07 AM, and sunset from 6:17 PM to 6:07 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)	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0
Sunrise (AM)	6:18	6:18	6:18	6:17	6:17	6:16	6:16	6:16	6:15	6:15	6:14	6:14	6:14	6:13	6:13	6:12	6:12	6:12	6:11	6:11	6:10	6:10	6:10	6:09	6:09	6:08	6:08	6:08	6:07	6:07
Sunset (PM)	6:17	6:16	6:16	6:16	6:16	6:15	6:15	6:15	6:14	6:14	6:14	6:13	6:13	6:13	6:12	6:12	6:12	6:11	6:11	6:11	6:10	6:10	6:10	6:09	6:09	6:09	6:08	6:08	6:08	6:07

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.0	6:18	6:17
2	12.0	6:18	6:16
3	12.0	6:18	6:16
4	12.0	6:17	6:16
5	12.0	6:17	6:16
6	12.0	6:16	6:15
7	12.0	6:16	6:15
8	12.0	6:16	6:15
9	12.0	6:15	6:14
10	12.0	6:15	6:14
11	12.0	6:14	6:14
12	12.0	6:14	6:13
13	12.0	6:14	6:13
14	12.0	6:13	6:13
15	12.0	6:13	6:12
16	12.0	6:12	6:12
17	12.0	6:12	6:12
18	12.0	6:12	6:11
19	12.0	6:11	6:11
20	12.0	6:11	6:11
21	12.0	6:10	6:10
22	12.0	6:10	6:10
23	12.0	6:10	6:10
24	12.0	6:09	6:09
25	12.0	6:09	6:09
26	12.0	6:08	6:09
27	12.0	6:08	6:08
28	12.0	6:08	6:08
29	12.0	6:07	6:08
30	12.0	6:07	6:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.37 kWh/m².

For context, solar energy here swings from a low near 2.75 kWh/m² to a high of 3.49 kWh/m² in November across the year — September's 3.37 kWh/m² sits near the top of that range.

	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)	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.4	Moderate
2	3.4	Moderate
3	3.4	Moderate
4	3.4	Moderate
5	3.4	Moderate
6	3.4	Moderate
7	3.4	Moderate
8	3.4	Moderate
9	3.4	Moderate
10	3.4	Moderate
11	3.4	Moderate
12	3.4	Moderate
13	3.4	Moderate
14	3.4	Moderate
15	3.4	Moderate
16	3.4	Moderate
17	3.4	Moderate
18	3.4	Moderate
19	3.4	Moderate
20	3.4	Moderate
21	3.3	Moderate
22	3.3	Moderate
23	3.3	Moderate
24	3.3	Moderate
25	3.3	Moderate
26	3.3	Moderate
27	3.3	Moderate
28	3.3	Moderate
29	3.3	Moderate
30	3.3	Moderate

Planning a trip in September

Hazard calendar for Ventanas

In seasonPeak

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

Ventanas's rainy season runs December–July, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Ventanas?

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

3.7

Sightseeing

4th-best month of the year

3.7

Beach & pool

5th-best month of the year

September is a weaker month for outdoor sightseeing in Ventanas.

What to pack for Ventanas in September

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

In September, Ventanas sees daytime highs around 27°C and nights near 21°C. Pack rain gear. Worth having: light clothes. About 27 days see rain.

rain gearlight clothes

UV index in Ventanas in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ventanas peaks around March 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 16 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	14	15	12	12	10	10	11	11	12	11	11
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	14	Extreme
Mar	15	Extreme
Apr	12	Extreme
May	12	Extreme
Jun	10	Extreme
Jul	10	Very high
Aug	11	Extreme
Sep	11	Extreme
Oct	12	Extreme
Nov	11	Extreme
Dec	11	Extreme

Air quality in Ventanas 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 Ventanas is worst in November — around 47 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (January, 20 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	20	20	22	23	21	21	21	21	23	27	47	30
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Poor	Moderate

	PM2.5 (µg/m³)	Level
Jan	20	Moderate
Feb	20	Moderate
Mar	22	Moderate
Apr	23	Moderate
May	21	Moderate
Jun	21	Moderate
Jul	21	Moderate
Aug	21	Moderate
Sep	23	Moderate
Oct	27	Moderate
Nov	47	Poor
Dec	30	Moderate

Location & terrain

Where is Ventanas?

Ventanas sits at 1.4°S, 79.5°W, 371 m above sea level, in Ecuador. The nearest listed city is Vinces, 35 km away.

Topography around Ventanas

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

Within 3 km, the terrain around Ventanas has only modest variations in elevation — a maximum elevation change of 39 m around an average of 24 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,132 m; within 80 km, extreme variations in elevation — a maximum elevation change of 6,245 m.

The land around Ventanas is covered by trees (50%) and grassland (29%) within 3 km, grassland (48%) and trees (41%) within 16 km, and trees (47%) and grassland (34%) within 80 km.

3 km

39 m

trees 50%

16 km

1,132 m

grassland 48%

80 km

6,245 m

trees 47%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

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

September weather nearby: Vinces 35 km · Babahoyo 41 km · Montalvo 43 km · Quevedo 46 km · El Empalme 48 km · Balzar 50 km · Guaranda 54 km · Valencia 56 km

Ecuador travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 43% of US; price level, 2025
GDP per capita: $7,125; 2025
Happiness: 6.1 / 10; World Happiness, 2025
Safe drinking water: 70%; of population, 2024
Homicide rate: 45.7; per 100k, 2023
Road deaths: 20.1; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Low; EF EPI 466
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 Ventanas (-1.4428°, -79.4627°, elevation 371 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).

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

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	3	97
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	2	98
12	2	98
13	2	98
14	2	98
15	2	98
16	2	98
17	2	98
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

	Rain chance (%)
1	87
2	87
3	87
4	87
5	87
6	88
7	88
8	88
9	89
10	89
11	90
12	90
13	90
14	90
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	91
23	91
24	90
25	90
26	90
27	90
28	89
29	89
30	89

	Muggy (%)	Oppressive (%)
1	73	27
2	73	27
3	73	27
4	72	28
5	72	28
6	72	28
7	71	29
8	71	29
9	70	30
10	70	30
11	69	31
12	69	31
13	68	32
14	67	33
15	66	34
16	65	35
17	64	36
18	64	36
19	63	37
20	62	38
21	61	39
22	60	40
23	60	40
24	59	41
25	59	41
26	58	42
27	58	42
28	58	42
29	57	43
30	57	43

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

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	3	97
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	2	98
12	2	98
13	2	98
14	2	98
15	2	98
16	2	98
17	2	98
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

	Rain chance (%)
1	87
2	87
3	87
4	87
5	87
6	88
7	88
8	88
9	89
10	89
11	90
12	90
13	90
14	90
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	91
23	91
24	90
25	90
26	90
27	90
28	89
29	89
30	89

	Muggy (%)	Oppressive (%)
1	73	27
2	73	27
3	73	27
4	72	28
5	72	28
6	72	28
7	71	29
8	71	29
9	70	30
10	70	30
11	69	31
12	69	31
13	68	32
14	67	33
15	66	34
16	65	35
17	64	36
18	64	36
19	63	37
20	62	38
21	61	39
22	60	40
23	60	40
24	59	41
25	59	41
26	58	42
27	58	42
28	58	42
29	57	43
30	57	43

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

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	3	97
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	2	98
12	2	98
13	2	98
14	2	98
15	2	98
16	2	98
17	2	98
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

	Rain chance (%)
1	87
2	87
3	87
4	87
5	87
6	88
7	88
8	88
9	89
10	89
11	90
12	90
13	90
14	90
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	91
23	91
24	90
25	90
26	90
27	90
28	89
29	89
30	89

	Muggy (%)	Oppressive (%)
1	73	27
2	73	27
3	73	27
4	72	28
5	72	28
6	72	28
7	71	29
8	71	29
9	70	30
10	70	30
11	69	31
12	69	31
13	68	32
14	67	33
15	66	34
16	65	35
17	64	36
18	64	36
19	63	37
20	62	38
21	61	39
22	60	40
23	60	40
24	59	41
25	59	41
26	58	42
27	58	42
28	58	42
29	57	43
30	57	43