Izalco weather in October

In October, Izalco sees average daytime highs of 28°C and overnight lows near 21°C, with 336 mm of rain across 26.3 wet days and about 11.7 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 11% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of October to 11 h 30 min by month's end. Set against the rest of the year, October is Izalco's 8th-clearest and 7th-windiest month. For the whole year in context, see Izalco's year-round climate.

Daytime high
28°
11th warmest
Overnight low
21°
6th coldest
Rainfall
336 mm
26.3 wet days
Daylight
11 h 42 min
5:53 AM – 5:34 PM
Cloud cover
75%
8th clearest
Wind
5 km/h
7th windiest
Solar energy
4.89 kWh/m²
Travel score
3.8
out of 10

Izalco is district in Eastern Sonsonate, El Salvador.

Density
109/km²
people per km²

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical October day in Izalco reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, October runs on par with September and on par with November.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122822
132822
142822
152822
162822
172822
182821
192821
202821
212821
222821
232821
242821
252821
262821
272821
282821
292821
302821
312821

How October really feels in Izalco

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Izalco weather by month

How October compares with the rest of the year at a glance. October is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°51.511.37.0
Feb30° / 20°51.711.56.6
Mar30° / 21°185.411.95.7
Apr30° / 22°6514.312.34.6
May29° / 22°26726.512.63.4
Jun29° / 22°32828.112.83.1
Jul29° / 22°25026.212.73.4
Aug29° / 22°29827.812.53.2
Sep28° / 22°39829.312.13.2
Oct28° / 21°33626.311.73.8
Nov29° / 21°7311.711.45.6
Dec29° / 20°122.911.26.9

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 74%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11288
21486
31486
41585
51585
61585
71783
81783
91882
101882
111882
121981
131981
141981
152179
162278
172377
182476
192674
202773
213070
223070
233367
243565
253664
263961
274060
284357
294456
304654
314753

Chance of precipitation in October

Any precipitation

Izalco gets around 336 mm of rain over 26.3 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 85% and peaks near 97% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
197
296
396
495
595
694
793
893
992
1092
1191
1291
1390
1489
1589
1688
1787
1886
1985
2084
2182
2280
2379
2477
2576
2674
2772
2870
2969
3067
3164

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the oppressive band about 76% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
100793
201891
301891
401990
5011089
6011188
7011188
8011287
9011386
10011485
11011584
12011683
13011782
14011980
15012079
16012178
17012277
18022276
19022375
20032473
21032572
22142669
23152767
24152866
25163063
26163162
27173260
28183358
29183457
30293653
31293752

Wind in October

Winds average 5 km/h in October.

Across October, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 54 min at the start of October to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over October. Sunrise moves from 5:51 AM to 5:57 AM, and sunset from 5:44 PM to 5:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:515:44
211.95:515:43
311.95:515:43
411.85:525:42
511.85:525:41
611.85:525:41
711.85:525:40
811.85:525:39
911.85:525:39
1011.85:525:38
1111.75:525:37
1211.75:525:37
1311.75:535:36
1411.75:535:35
1511.75:535:35
1611.75:535:34
1711.75:535:34
1811.75:535:33
1911.75:545:33
2011.65:545:32
2111.65:545:32
2211.65:545:31
2311.65:555:31
2411.65:555:30
2511.65:555:30
2611.65:555:29
2711.65:565:29
2811.55:565:29
2911.55:565:28
3011.55:575:28
3111.55:575:28

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.89 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.89 kWh/m² to a high of 6.48 kWh/m² in March across the year — October's 4.89 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.9Bright
204.9Bright
214.9Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in October

Hazard calendar for Izalco

In seasonPeak

In October, Izalco sits inside its atlantic hurricane and monsoon season. The full year is below, with each hazard's peak months called out.

Izalco sits in the Atlantic hurricane belt; the season peaks August–October.

Izalco's monsoon runs May–October, when most of the year's rain falls.

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

Is October a good time to visit Izalco?

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

3.8
Sightseeing
7th-best month of the year
4.3
Beach & pool
9th-best month of the year

October is a weaker month for outdoor sightseeing in Izalco.

What to pack for Izalco in October

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

In October, Izalco sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Izalco in October

The nearest coast averages about 29°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 26 km away) is warmest in August at about 30°C and coldest in January near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Izalco in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Izalco peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highApr 10UV 13Nov 23UV 9
UV index (midday)Level
Jan9Very high
Feb13Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Izalco in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Izalco is worst in May — around 31 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (January, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1230 µg/m³Jan 1914 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar17Moderate
Apr28Moderate
May31Moderate
Jun21Moderate
Jul23Moderate
Aug21Moderate
Sep20Moderate
Oct19Moderate
Nov19Moderate
Dec15Moderate
Location & terrain

Where is Izalco?

Izalco sits at 13.7°N, 89.7°W, 422 m above sea level, in El Salvador. The nearest listed city is Sonzacate, 5.0 km away.

AcajutlaChalchuapaAhuachapanSanta AnaSanta TeclaQuezaltepeque

Topography around Izalco

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

Within 3 km, the terrain around Izalco has significant variations in elevation — a maximum elevation change of 334 m around an average of 419 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,332 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,353 m.

The land around Izalco is covered by trees (70%) within 3 km, trees (71%) within 16 km, and trees (41%), water (29%) and grassland (20%) within 80 km.

3 km
334 m
16 km
2,332 m
80 km
2,353 m
treesshrubsgrasslandcroplandartificial surfaceswater
October weather nearby: Sonzacate 5.0 km · Sonsonate 6.0 km · Acajutla 24 km · Chalchuapa 27 km · Ahuachapan 27 km · Santa Ana 30 km · Santa Tecla 43 km · Quezaltepeque 44 km

El Salvador travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
115 V · 60 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$5,767
2025
Happiness
6.6 / 10
World Happiness, 2025
Homicide rate
7.9
per 100k, 2022
Road deaths
20.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 523
Religion
Roman Catholic 44%Protestant 40%none 16%

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 Izalco (13.7447°, -89.6731°, elevation 422 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. 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).