Santiago weather in January

In January, Santiago sees average daytime highs of 27°C and overnight lows near 21°C, with 65 mm of rain across 11 wet days and about 11.1 hours of daylight. It is the 12th-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 10% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 hours at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is Santiago's 6th-clearest and 4th-windiest month. For the whole year in context, see Santiago's year-round climate.

Daytime high
27°
12th warmest
Overnight low
21°
1st coldest
Rainfall
65 mm
11 wet days
Daylight
11 h 06 min
6:30 AM – 5:36 PM
Cloud cover
71%
6th clearest
Wind
4 km/h
4th windiest
Solar energy
3.03 kWh/m²
Travel score
6.2
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Santiago 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, January runs on par with December and about 1°C cooler than February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12721
22721
32721
42721
52721
62721
72721
82721
92721
102721
112721
122721
132721
142721
152721
162721
172721
182721
192721
202721
212721
222721
232721
242721
252721
262721
272721
282721
292721
302721
312721

How January really feels in Santiago

Once humidity and wind are folded in, January 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

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

Santiago weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 21°651111.16.2
Feb28° / 21°529.611.46.0
Mar30° / 22°6110.811.95.0
Apr32° / 23°6111.112.43.7
May34° / 24°16117.412.82.5
Jun34° / 25°13818.6132.2
Jul33° / 24°2232412.92.2
Aug33° / 24°20522.812.62.5
Sep32° / 24°21922.812.12.7
Oct31° / 24°18619.611.63.6
Nov29° / 23°15318.411.24.2
Dec27° / 22°15816.1115.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 22% of January, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23169
33169
43268
53268
63268
73268
83268
93268
103268
113268
123268
133268
143268
153169
163169
173169
183169
193169
203268
213268
223268
233367
243367
253367
263367
273268
283268
293367
303367
313367

Chance of precipitation in January

Any precipitation

Santiago gets around 65 mm of rain over 11 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
236
336
435
535
635
734
834
934
1034
1134
1235
1335
1435
1535
1635
1736
1836
1936
2036
2136
2236
2336
2436
2536
2636
2736
2836
2936
3036
3136

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 90% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
1114445
2104544
3104643
4104743
5104842
6104941
795041
895140
995140
1095140
1195140
1295239
1395239
1495239
1595239
1695239
1795239
1895239
1995239
20105139
21105139
22105139
23105238
24105238
25115138
26115138
27115138
28115138
29115138
30115138
31115138

Wind in January

Winds average 4 km/h in January.

Across January, daily wind ranges from about 4 km/h on the calmest days to 5 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
104calm
114calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 hours at the start of January to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 6:26 AM to 6:30 AM, and sunset from 5:28 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:265:28
211.06:275:28
311.06:275:29
411.06:275:29
511.06:285:30
611.06:285:30
711.06:285:31
811.16:285:32
911.16:295:32
1011.16:295:33
1111.16:295:33
1211.16:295:34
1311.16:305:34
1411.16:305:35
1511.16:305:36
1611.16:305:36
1711.16:305:37
1811.16:305:37
1911.16:305:38
2011.16:305:39
2111.16:305:39
2211.26:305:40
2311.26:305:40
2411.26:305:41
2511.26:305:41
2611.26:305:42
2711.26:305:43
2811.26:305:43
2911.26:305:44
3011.26:305:44
3111.36:305:45

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.03 kWh/m².

For context, solar energy here swings from a low near 2.48 kWh/m² to a high of 5.76 kWh/m² in April across the year — January's 3.03 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.7Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.8Moderate
62.9Moderate
72.9Moderate
82.9Moderate
92.9Moderate
102.9Moderate
113.0Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
203.1Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.2Moderate
293.2Moderate
303.2Moderate
313.2Moderate
Planning a trip in January

Is January a good time to visit Santiago?

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

6.2
Sightseeing
1st-best month of the year
6.2
Beach & pool
4th-best month of the year

January is a reasonable time to visit Santiago for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Santiago in January

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

In January, Santiago sees daytime highs around 27°C and nights near 21°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

UV index in Santiago in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santiago peaks around August 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 19UV 14Dec 11UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr13Extreme
May13Extreme
Jun13Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Santiago in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Santiago is worst in April — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1616 µg/m³Dec 1611 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Good
Mar15Moderate
Apr17Moderate
May14Moderate
Jun13Moderate
Jul13Moderate
Aug15Moderate
Sep14Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Santiago?

Santiago sits at 16.7°N, 121.5°E, 78 m above sea level, in Philippines. The nearest listed city is Ramon, 11 km away.

Topography around Santiago

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

Within 3 km, the terrain around Santiago has only modest variations in elevation — a maximum elevation change of 31 m around an average of 81 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 768 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,898 m.

The land around Santiago is covered by cropland (47%), trees (28%) and artificial surfaces (21%) within 3 km, cropland (63%) and trees (28%) within 16 km, and trees (70%) within 80 km.

3 km
31 m
16 km
768 m
80 km
2,898 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Ramon 11 km · Alicia 19 km · Diadi 21 km · San Mateo 22 km · Aglipay 24 km · Baggabag B 43 km · Solano 43 km · Lagawe 47 km

Philippines travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
230 V · 60 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$4,171
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Homicide rate
4.3
per 100k, 2023
Road deaths
12
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 569
Religion
Roman Catholic 79%other 8%Muslim 6%other Christian 4%

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 Santiago (16.6881°, 121.5487°, elevation 78 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).