San Mateo weather in January

In January, San Mateo sees average daytime highs of 27°C and overnight lows near 18°C, with 75 mm of rain across 19.6 wet days and about 11.5 hours of daylight. It is the 12th-warmest and 11th-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 21% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 h 24 min at the start of January to 11 h 30 min by month's end. Set against the rest of the year, January is San Mateo's 1st-clearest and 3rd-windiest month. For the whole year in context, see San Mateo's year-round climate.

Daytime high
27°
12th warmest
Overnight low
18°
1st coldest
Rainfall
75 mm
19.6 wet days
Daylight
11 h 30 min
6:25 AM – 5:53 PM
Cloud cover
57%
1st clearest
Wind
5 km/h
3rd windiest
Solar energy
5.05 kWh/m²
Travel score
5.2
out of 10

San Mateo is place in Aragua, Venezuela.

Founded
1620

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

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 San Mateo reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12718
22718
32718
42718
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262718
272718
282718
292718
302718
312718

San Mateo weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°7519.611.55.2
Feb28° / 19°6415.911.75.3
Mar28° / 19°10418.111.94.8
Apr28° / 20°17122.412.23.9
May29° / 21°16121.112.53.9
Jun28° / 20°11620.712.64.1
Jul28° / 20°13322.812.54.3
Aug28° / 20°12721.612.34.2
Sep29° / 20°11519.212.14.1
Oct29° / 20°14021.411.84.0
Nov28° / 20°16723.711.54.1
Dec27° / 19°9620.611.44.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 36% of January, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25842
35842
45842
55842
65842
75743
85743
95842
105743
115743
125743
135644
145644
155644
165644
175545
185545
195644
205644
215743
225743
235743
245842
255842
265842
275842
285941
295941
305842
315842

Chance of precipitation in January

Any precipitation

San Mateo gets around 75 mm of rain over 19.6 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 63% and peaks near 67% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
160
261
361
462
562
663
763
864
965
1065
1166
1266
1366
1467
1566
1666
1766
1865
1965
2064
2164
2263
2363
2462
2561
2660
2760
2859
2958
3058
3158

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1328681
2228691
3229681
4229681
5230671
6130681
7130681
8130681
9130681
10130681
11130681
12129691
13129691
14029701
15029701
16029701
17030691
18030691
19031681
20031690
21032680
22032680
23033670
24033670
25134650
26134650
27134650
28134650
29134650
30134650
31134641

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 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
105calm
115calm
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 h 24 min at the start of January to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:20 AM to 6:27 AM, and sunset from 5:45 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:205:45
211.46:215:46
311.46:215:46
411.46:225:47
511.46:225:47
611.46:225:48
711.46:235:48
811.46:235:49
911.46:235:49
1011.46:245:50
1111.46:245:50
1211.46:245:51
1311.46:245:51
1411.56:255:52
1511.56:255:52
1611.56:255:53
1711.56:255:53
1811.56:255:54
1911.56:265:54
2011.56:265:55
2111.56:265:55
2211.56:265:56
2311.56:265:56
2411.56:265:57
2511.56:265:57
2611.56:265:57
2711.56:265:58
2811.56:275:58
2911.56:275:59
3011.56:275:59
3111.56:276:00

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.05 kWh/m².

For context, solar energy here swings from a low near 4.65 kWh/m² to a high of 5.78 kWh/m² in March across the year — January's 5.05 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in January

Is January a good time to visit San Mateo?

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

5.2
Sightseeing
2nd-best month of the year
5.3
Beach & pool
3rd-best month of the year

January is a reasonable time to visit San Mateo for sightseeing.

What to pack for San Mateo in January

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

In January, San Mateo sees daytime highs around 27°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near San Mateo in January

The nearest coast averages about 26°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 46 km away) is warmest in September at about 29°C and coldest in February near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr26Warm
May27Warm
Jun27Warm
Jul27Warm
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in San Mateo in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 San Mateo peaks around March 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 10 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 highMar 18UV 14Dec 10UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov9Very high
Dec9Very high

Air quality in San Mateo 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 San Mateo is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1131 µg/m³Dec 2313 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar19Moderate
Apr26Moderate
May31Moderate
Jun32Moderate
Jul27Moderate
Aug24Moderate
Sep21Moderate
Oct20Moderate
Nov16Moderate
Dec13Moderate
Location & terrain

Where is San Mateo?

San Mateo sits at 10.2°N, 67.4°W, 497 m above sea level, in Venezuela. The nearest listed city is Cagua, 5.0 km away.

Topography around San Mateo

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

Within 3 km, the terrain around San Mateo has significant variations in elevation — a maximum elevation change of 560 m around an average of 580 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,633 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,728 m.

The land around San Mateo is covered by trees (33%) and shrubs (26%) within 3 km, trees (34%), grassland (27%) and shrubs (21%) within 16 km, and trees (45%) and water (23%) within 80 km.

3 km
560 m
16 km
1,633 m
80 km
2,728 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Cagua 5.0 km · Turmero 6.0 km · La Victoria 10 km · Palo Negro 14 km · Maracay 19 km · Villa de Cura 21 km · El Limón 25 km · Las Tejerías 28 km

Venezuela travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 0% of US
price level, 2011
GDP per capita
$3,495
2025
Happiness
5.8 / 10
World Happiness, 2025
Homicide rate
12.6
per 100k, 2022
Road deaths
39
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 520
Religion
Roman Catholic 48%Protestant 32%none 14%believer 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 San Mateo (10.213°, -67.4236°, elevation 497 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. 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).