Santiago weather in March

In March, Santiago sees average daytime highs of 28°C and overnight lows near 18°C, with 144 mm of rain across 11.7 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 27°C by the end. The sky is clear or mostly clear about 41% of the time in March, and the air most often feels muggy.

Daylight stretches from about 12 h 42 min at the start of March to 11 h 48 min by month's end. Set against the rest of the year, March is Santiago's 3rd-clearest and 10th-windiest month. For the whole year in context, see Santiago's year-round climate.

Daytime high
28°
4th warmest
Overnight low
18°
9th coldest
Rainfall
144 mm
11.7 wet days
Daylight
12 h 12 min
7:43 AM – 7:56 PM
Cloud cover
52%
3rd clearest
Wind
11 km/h
10th windiest
Solar energy
5.09 kWh/m²
Travel score
5.9
out of 10

Santiago is human settlement in Brazil.

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 29°C in the first days to 27°C by the end.

A typical March day in Santiago reaches about 28°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 32°C. Set against its neighbours, March runs about 1°C cooler than February and about 3°C warmer than April.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12919
22919
32919
42919
52919
62919
72919
82919
92919
102919
112918
122918
132818
142818
152818
162818
172818
182818
192818
202818
212818
222817
232817
242717
252717
262717
272717
282717
292717
302717
312717

Santiago weather by month

How March compares with the rest of the year at a glance. March is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°17414.213.74.6
Feb29° / 19°15413.4134.9
Mar28° / 18°14411.712.25.9
Apr25° / 15°16110.511.36.8
May21° / 12°1259.410.66.6
Jun19° / 10°1369.910.26.1
Jul19° / 1509.910.36.2
Aug21° / 11°1309.2116.8
Sep22° / 12°16010.511.86.6
Oct25° / 15°23612.612.76.5
Nov27° / 16°15510.413.56.4
Dec29° / 18°16912.213.85.1

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 14% of March, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35347
45446
55545
65545
75644
85644
95644
105644
115644
125644
135644
145644
155644
165743
175743
185644
195644
205743
215743
225644
235743
245644
255644
265644
275644
285644
295644
305644
315644

Chance of precipitation in March

Any precipitation

Santiago gets around 144 mm of rain over 11.7 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
245
345
444
543
642
741
841
940
1039
1139
1238
1338
1438
1537
1637
1737
1836
1936
2036
2135
2235
2335
2435
2535
2635
2734
2834
2934
3034
3134

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the muggy band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 47% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1412253424
2413263423
3413273522
4413273521
5413283520
6314283519
7314293518
8314293617
9415293616
10415303615
11416303714
12416303713
13416303712
14517303711
15517303810
1661830379
1771830378
1871930378
1981930367
2091930367
2192030356
22102030356
23102030356
24112030346
25112029345
26122029345
27122129335
28132128335
29142128335
30142127325
31152127326

Wind in March

Winds average 11 km/h in March.

Across March, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 42 min at the start of March to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over March. Sunrise moves from 7:33 AM to 7:51 AM, and sunset from 8:12 PM to 7:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.77:338:12
212.67:348:11
312.67:348:10
412.67:358:09
512.57:368:08
612.57:368:07
712.57:378:06
812.57:388:05
912.47:388:04
1012.47:398:03
1112.47:408:01
1212.37:408:00
1312.37:417:59
1412.37:417:58
1512.27:427:57
1612.27:437:56
1712.27:437:54
1812.27:447:53
1912.17:447:52
2012.17:457:51
2112.17:467:50
2212.07:467:48
2312.07:477:47
2412.07:477:46
2511.97:487:45
2611.97:497:44
2711.97:497:42
2811.97:507:41
2911.87:507:40
3011.87:517:39
3111.87:517:37

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.09 kWh/m².

For context, solar energy here swings from a low near 2.52 kWh/m² to a high of 6.78 kWh/m² in December across the year — March's 5.09 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.2Bright
155.1Bright
165.1Bright
175.1Bright
185.0Bright
195.0Bright
205.0Bright
214.9Bright
224.9Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in March

Is March a good time to visit Santiago?

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

5.9
Sightseeing
9th-best month of the year
6.7
Beach & pool
2nd-best month of the year

March 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 March

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

In March, Santiago sees daytime highs around 28°C and nights near 18°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Santiago in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 10 (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 January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighExtremeJan 20UV 14Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar10Extreme
Apr8Very high
May5Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct6High
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Santiago?

Santiago sits at 29.2°S, 54.9°W, 426 m above sea level, in Brazil. The nearest listed city is São Francisco de Assis, 47 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 127 m around an average of 392 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 285 m; within 80 km, significant variations in elevation — a maximum elevation change of 475 m.

The land around Santiago is covered by grassland (39%), artificial surfaces (31%) and trees (26%) within 3 km, grassland (53%) and trees (27%) within 16 km, and cropland (41%), grassland (38%) and trees (20%) within 80 km.

3 km
127 m
16 km
285 m
80 km
475 m
treesgrasslandcroplandartificial surfaces
March weather nearby: São Francisco de Assis 47 km · São Pedro do Sul 82 km · São Luiz Gonzaga 88 km · Tupanciretã 101 km · Alegrete 111 km · Júlio de Castilhos 115 km · Santo Ângelo 115 km · Santa Maria 116 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 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 (-29.1917°, -54.8672°, elevation 426 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).