Santiago weather in May

In May, Santiago sees average daytime highs of 34°C and overnight lows near 24°C, with 161 mm of rain across 17.4 wet days and about 12.8 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 22% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 36 min at the start of May to 12 h 54 min by month's end. Set against the rest of the year, May is Santiago's 4th-clearest and 10th-windiest month. For the whole year in context, see Santiago's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
24°
9th coldest
Rainfall
161 mm
17.4 wet days
Daylight
12 h 48 min
5:27 AM – 6:13 PM
Cloud cover
68%
4th clearest
Wind
4 km/h
10th windiest
Solar energy
5.73 kWh/m²
Travel score
2.5
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical May day in Santiago reaches about 34°C in the afternoon and slips back to 24°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 36°C. Set against its neighbours, May runs about 2°C warmer than April and on par with June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13424
23424
33424
43424
53424
63424
73424
83424
93424
103424
113424
123424
133424
143424
153424
163424
173424
183424
193424
203424
213424
223424
233424
243424
253424
263424
273424
283424
293424
303424
313424

How May really feels in Santiago

Once humidity and wind are folded in, May averages 31 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
31
31 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Santiago weather by month

How May compares with the rest of the year at a glance. May is the 2nd-warmest and 5th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35446
45347
55248
65149
75050
84951
94753
104753
114555
124456
134357
144258
154060
163862
173862
183664
193466
203367
213268
223169
232872
242872
252773
262773
272674
282575
292575
302575
312575

Chance of precipitation in May

Any precipitation

Santiago gets around 161 mm of rain over 17.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 56% and peaks near 70% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
139
240
341
442
542
643
744
845
946
1047
1148
1249
1351
1452
1554
1655
1757
1859
1960
2062
2163
2264
2366
2467
2568
2669
2770
2870
2970
3070
3169

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 67% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
125246
225048
324949
424850
524652
624553
714455
814257
914158
1014059
1113960
1213762
1313663
1413465
1513366
1613267
1703169
1802971
1902872
2002773
2102575
2202476
2302377
2402179
2502080
2601981
2701882
2801783
2901684
3001585
3101585

Wind in May

Winds average 4 km/h in May.

Across May, 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.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 5:33 AM to 5:24 AM, and sunset from 6:09 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:336:09
212.65:336:09
312.65:326:09
412.65:326:10
512.65:316:10
612.75:316:10
712.75:306:11
812.75:306:11
912.75:296:11
1012.75:296:11
1112.75:296:12
1212.75:286:12
1312.75:286:12
1412.85:276:13
1512.85:276:13
1612.85:276:13
1712.85:266:14
1812.85:266:14
1912.85:266:14
2012.85:266:15
2112.85:256:15
2212.85:256:15
2312.85:256:16
2412.95:256:16
2512.95:256:16
2612.95:246:17
2712.95:246:17
2812.95:246:18
2912.95:246:18
3012.95:246:18
3112.95:246:19

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.73 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 — May's 5.73 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in May

Is May a good time to visit Santiago?

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

2.5
Sightseeing
9th-best month of the year
5.0
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Santiago.

What to pack for Santiago in May

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

In May, Santiago sees daytime highs around 34°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Santiago in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 13 (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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).