Santarém weather in March

In March, Santarém sees average daytime highs of 29°C and overnight lows near 25°C, with 488 mm of rain across 29.3 wet days and about 12 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 1% of the time in March, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of March to 12 hours by month's end. Set against the rest of the year, March is Santarém's 11th-clearest and 6th-windiest month. For the whole year in context, see Santarém's year-round climate.

Daytime high
29°
11th warmest
Overnight low
25°
5th coldest
Rainfall
488 mm
29.3 wet days
Daylight
12 hours
6:48 AM – 6:49 PM
Cloud cover
86%
11th clearest
Wind
10 km/h
6th windiest
Solar energy
4.63 kWh/m²
Travel score
3.0
out of 10

Santarém 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

Day-to-day highs hold fairly steady near 29°C through the month.

A typical March day in Santarém reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, March runs on par with February and on par with April.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925
312925

How March really feels in Santarém

Once humidity and wind are folded in, March 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
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Santarém weather by month

How March compares with the rest of the year at a glance. March is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°40928.212.13.1
Feb29° / 25°38725.812.13.1
Mar29° / 25°48829.3123.0
Apr29° / 25°45029.211.92.9
May29° / 25°36529.611.93.0
Jun29° / 24°18724.811.93.6
Jul30° / 25°11419.211.94.3
Aug31° / 25°741311.94.5
Sep32° / 26°6810.5124.2
Oct32° / 26°10711.912.13.9
Nov31° / 26°14916.612.13.6
Dec30° / 25°23321.712.13.4

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 8% of March, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11090
21090
31090
41090
5991
6991
7892
8892
9892
10892
11892
12892
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25892
26892
27892
28892
29892
30892
31892

Chance of precipitation in March

Any precipitation

Santarém gets around 488 mm of rain over 29.3 wet days in March, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 94% and peaks near 96% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
195
295
395
495
595
695
794
894
994
1094
1193
1293
1393
1493
1593
1693
1793
1893
1994
2094
2194
2295
2395
2495
2595
2695
2795
2896
2996
3096
3196

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the oppressive band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
18812
28812
38812
48812
58812
68812
78812
88812
98812
108812
118812
128812
138911
148911
158911
168911
178812
188812
198812
208812
218812
228812
238713
248713
258713
268614
278614
288614
298515
308515
318515

Wind in March

Winds average 10 km/h in March.

Across March, daily wind ranges from about 9 km/h on the calmest days to 10 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
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 06 min at the start of March to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over March. Sunrise moves from 6:51 AM to 6:44 AM, and sunset from 6:54 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:516:54
212.06:506:53
312.06:506:53
412.06:506:53
512.06:506:53
612.06:506:52
712.06:506:52
812.06:506:52
912.06:496:51
1012.06:496:51
1112.06:496:51
1212.06:496:50
1312.06:496:50
1412.06:486:50
1512.06:486:49
1612.06:486:49
1712.06:486:49
1812.06:486:48
1912.06:476:48
2012.06:476:48
2112.06:476:47
2212.06:476:47
2312.06:466:46
2412.06:466:46
2512.06:466:46
2612.06:466:45
2712.06:456:45
2812.06:456:44
2912.06:456:44
3012.06:456:44
3112.06:446:43

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.63 kWh/m².

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 6.38 kWh/m² in October across the year — March's 4.63 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in March

Hazard calendar for Santarém

In seasonPeak

In March, Santarém sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Santarém's rainy season runs December–May, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is March a good time to visit Santarém?

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

3.0
Sightseeing
10th-best month of the year
3.8
Beach & pool
11th-best month of the year

March is a weaker month for outdoor sightseeing in Santarém.

What to pack for Santarém in March

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

In March, Santarém sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

UV index in Santarém in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santarém peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Jul 12UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep11Extreme
Oct12Extreme
Nov10Extreme
Dec11Extreme

Air quality in Santarém in March

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Santarém is worst in November — around 31 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (June, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1530 µg/m³Jun 209 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb16Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun9Good
Jul9Good
Aug12Good
Sep15Moderate
Oct24Moderate
Nov31Moderate
Dec23Moderate
Location & terrain

Where is Santarém?

Santarém sits at 2.4°S, 54.7°W, 51 m above sea level, in Brazil. The nearest listed city is Mojuí dos Campos, 28 km away.

Topography around Santarém

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

Within 3 km, the terrain around Santarém has only modest variations in elevation — a maximum elevation change of 70 m around an average of 34 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 198 m; within 80 km, significant variations in elevation — a maximum elevation change of 281 m.

The land around Santarém is covered by artificial surfaces (65%) within 3 km, water (40%) and trees (34%) within 16 km, and trees (49%) and water (27%) within 80 km.

3 km
70 m
16 km
198 m
80 km
281 m
treesgrasslandartificial surfacesbare terrainwaterwetland
March weather nearby: Mojuí dos Campos 28 km · Belterra 33 km · Alenquer 56 km · Monte Alegre 85 km · Óbidos 107 km · Aveiro 147 km · Oriximiná 149 km · Prainha 154 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 Santarém (-2.4431°, -54.7083°, elevation 51 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).