San Javier weather in September

In September, San Javier sees average daytime highs of 17°C and overnight lows near 7°C, with 62 mm of rain across 5.7 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 18°C by the end. The sky is clear or mostly clear about 40% 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 San Javier's 8th-clearest and 5th-windiest month. For the whole year in context, see San Javier's year-round climate.

Daytime high
17°
8th warmest
Overnight low
4th coldest
Rainfall
62 mm
5.7 wet days
Daylight
11 h 48 min
7:48 AM – 7:35 PM
Cloud cover
52%
8th clearest
Wind
9 km/h
5th windiest
Solar energy
4.76 kWh/m²
Travel score
6.2
out of 10

San Javier is city in Maule, Chile.

Density
4,431/km²
people per km²
Founded
1852

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 16°C in the first days to 18°C by the end.

A typical September day in San Javier reaches about 17°C in the afternoon and slips back to 7°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 21°C. Set against its neighbours, September runs about 2°C warmer than August and about 3°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1166
2166
3166
4166
5166
6166
7166
8176
9176
10176
11176
12176
13176
14176
15176
16176
17177
18187
19187
20187
21187
22187
23187
24187
25187
26187
27187
28187
29187
30197

San Javier weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 13°4114.17.8
Feb28° / 13°70.913.38.3
Mar25° / 11°141.612.38.8
Apr21° / 454.111.17.6
May16° / 1368.210.15.3
Jun13° / 19911.69.63.6
Jul13° / 1389.69.83.8
Aug15° / 1128.810.74.7
Sep17° / 625.711.86.2
Oct20° / 405.112.97.3
Nov24° / 10°15213.98.7
Dec27° / 12°131.614.48.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24753
34852
44951
55050
65248
75347
85347
95446
105446
115446
125446
135545
145545
155545
165545
175545
185446
195545
205446
215446
225446
235347
245347
255347
265347
275347
285446
295545
305545

Chance of precipitation in September

Any precipitation

San Javier gets around 62 mm of rain over 5.7 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 20% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
126
225
325
424
523
623
722
822
921
1021
1121
1220
1320
1420
1519
1619
1718
1818
1918
2017
2117
2217
2317
2417
2517
2617
2717
2817
2917
3017

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 8:10 AM to 7:27 AM, and sunset from 7:23 PM to 7:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.28:107:23
211.28:097:24
311.38:077:25
411.38:067:25
511.48:047:26
611.48:037:27
711.48:017:28
811.58:007:28
911.57:587:29
1011.57:577:30
1111.67:557:31
1211.67:547:31
1311.77:527:32
1411.77:517:33
1511.77:497:34
1611.87:487:35
1711.87:467:35
1811.97:457:36
1911.97:437:37
2011.97:427:38
2112.07:407:39
2212.07:397:39
2312.07:377:40
2412.17:367:41
2512.17:347:42
2612.27:337:42
2712.27:317:43
2812.27:307:44
2912.37:287:45
3012.37:277:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.76 kWh/m².

For context, solar energy here swings from a low near 2.03 kWh/m² to a high of 8.79 kWh/m² in December across the year — September's 4.76 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
13.9Moderate
24.0Moderate
34.0Bright
44.1Bright
54.1Bright
64.2Bright
74.3Bright
84.3Bright
94.4Bright
104.4Bright
114.5Bright
124.6Bright
134.6Bright
144.7Bright
154.7Bright
164.8Bright
174.9Bright
184.9Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.2Bright
245.2Bright
255.3Bright
265.3Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for San Javier

In seasonPeak

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

San Javier's rainy season runs May–August, 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 San Javier?

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

6.2
Sightseeing
8th-best month of the year
1.7
Beach & pool
8th-best month of the year

September is a reasonable time to visit San Javier for sightseeing.

What to pack for San Javier in September

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

In September, San Javier sees daytime highs around 17°C and nights near 7°C. Worth packing: a warm layer and sun protection. About 6 days see rain.

a warm layersun protection

UV index in San Javier 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 San Javier peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 15UV 13Jun 15UV 2
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar9Very high
Apr5High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in San Javier 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 San Javier is worst in January — around 36 µg/m³ PM2.5 (poor), about 5.3× the cleanest month (November, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJan 1834 µg/m³Nov 137 µg/m³
PM2.5 (µg/m³)Level
Jan36Poor
Feb21Moderate
Mar8Good
Apr11Good
May27Moderate
Jun20Moderate
Jul12Good
Aug12Good
Sep11Good
Oct8Good
Nov7Good
Dec10Good
Location & terrain

Where is San Javier?

San Javier sits at 35.6°S, 71.7°W, 101 m above sea level, in Chile. The nearest listed city is Talca, 20 km away.

Topography around San Javier

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

Within 3 km, the terrain around San Javier has only modest variations in elevation — a maximum elevation change of 111 m around an average of 92 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 621 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,052 m.

The land around San Javier is covered by cropland (40%) and trees (24%) within 3 km, cropland (34%), trees (29%) and grassland (28%) within 16 km, and trees (40%) and grassland (33%) within 80 km.

3 km
111 m
16 km
621 m
80 km
3,052 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Talca 20 km · San Clemente 23 km · Linares 31 km · Colbún 31 km · Longaví 41 km · Parral 62 km · Molina 67 km · Cauquenes 68 km

Chile travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$17,995
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
6.3
per 100k, 2023
Road deaths
14.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 517
Religion
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

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 San Javier (-35.5952°, -71.7292°, elevation 101 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).