Santarém weather in August

In August, Santarém sees average daytime highs of 31°C and overnight lows near 25°C, with 74 mm of rain across 13 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 52% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of August to 12 hours by month's end. Set against the rest of the year, August is Santarém's 1st-clearest and 3rd-windiest month. For the whole year in context, see Santarém's year-round climate.

Daytime high: 31°; 4th warmest
Overnight low: 25°; 9th coldest
Rainfall: 74 mm; 13 wet days
Daylight: 11 h 54 min; 6:45 AM – 6:41 PM
Cloud cover: 43%; 1st clearest
Wind: 10 km/h; 3rd windiest
Solar energy: 5.74 kWh/m²
Travel score: 4.5; out of 10

Santarém is human settlement in Brazil.

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

← July Santarém year-round climate September →Best places to visit in August

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Santarém reaches about 31°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, August runs about 1°C warmer than July and about 1°C cooler than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	30	30	30	30	30	30	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31
Avg low (°C)	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	26	26	26	26	26	26	26	26	26	26	26	26

	Avg high (°C)	Avg low (°C)
1	30	25
2	30	25
3	30	25
4	30	25
5	30	25
6	30	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	25
14	31	25
15	31	25
16	31	25
17	31	25
18	31	25
19	31	25
20	31	26
21	31	26
22	31	26
23	31	26
24	31	26
25	31	26
26	31	26
27	31	26
28	31	26
29	31	26
30	31	26
31	31	26

How August really feels in Santarém

Once humidity and wind are folded in, August 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Santarém weather by month

How August compares with the rest of the year at a glance. August is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	29° / 25°	409	28.2	12.1	3.1
Feb	29° / 25°	387	25.8	12.1	3.1
Mar	29° / 25°	488	29.3	12	3.0
Apr	29° / 25°	450	29.2	11.9	2.9
May	29° / 25°	365	29.6	11.9	3.0
Jun	29° / 24°	187	24.8	11.9	3.6
Jul	30° / 25°	114	19.2	11.9	4.3
Aug	31° / 25°	74	13	11.9	4.5
Sep	32° / 26°	68	10.5	12	4.2
Oct	32° / 26°	107	11.9	12.1	3.9
Nov	31° / 26°	149	16.6	12.1	3.6
Dec	30° / 25°	233	21.7	12.1	3.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 26%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	75	75	75	75	74	74	73	73	72	72	72	72	72	73	74	74	74	74	75	76	76	76	76	76	76	75	75	74	73	72	72
Cloudier (%)	25	25	25	25	26	26	27	27	28	28	28	28	28	27	26	26	26	26	25	24	24	24	24	24	24	25	25	26	27	28	28

	Clearer (%)	Cloudier (%)
1	75	25
2	75	25
3	75	25
4	75	25
5	74	26
6	74	26
7	73	27
8	73	27
9	72	28
10	72	28
11	72	28
12	72	28
13	72	28
14	73	27
15	74	26
16	74	26
17	74	26
18	74	26
19	75	25
20	76	24
21	76	24
22	76	24
23	76	24
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	72	28
31	72	28

Chance of precipitation in August

Any precipitation

Santarém gets around 74 mm of rain over 13 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 45% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	45	45	44	44	44	44	44	44	44	45	45	45	45	44	44	44	43	43	42	42	41	40	40	39	39	39	39	39	38	38	38

	Rain chance (%)
1	45
2	45
3	44
4	44
5	44
6	44
7	44
8	44
9	44
10	45
11	45
12	45
13	45
14	44
15	44
16	44
17	43
18	43
19	42
20	42
21	41
22	40
23	40
24	39
25	39
26	39
27	39
28	39
29	38
30	38
31	38

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Oppressive (%)	95	95	95	95	95	95	95	94	94	94	94	94	94	95	95	95	95	95	95	95	95	95	95	95	95	96	96	96	95	95	95
Miserable (%)	5	5	5	5	5	5	5	6	6	6	6	6	6	5	5	5	5	5	5	5	5	5	5	5	5	4	4	4	5	5	5

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	95	5
20	95	5
21	95	5
22	95	5
23	95	5
24	95	5
25	95	5
26	96	4
27	96	4
28	96	4
29	95	5
30	95	5
31	95	5

Wind in August

Winds average 10 km/h in August.

Across August, 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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11	11	11	11
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	10	calm
2	10	calm
3	10	calm
4	10	calm
5	10	calm
6	10	calm
7	10	calm
8	10	calm
9	10	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	11	calm
25	11	calm
26	11	calm
27	11	calm
28	11	calm
29	11	calm
30	11	calm
31	11	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 54 min at the start of August to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over August. Sunrise moves from 6:48 AM to 6:40 AM, and sunset from 6:42 PM to 6:37 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	12.0
Sunrise (AM)	6:48	6:48	6:48	6:48	6:48	6:47	6:47	6:47	6:47	6:47	6:47	6:46	6:46	6:46	6:46	6:45	6:45	6:45	6:44	6:44	6:44	6:44	6:43	6:43	6:43	6:42	6:42	6:41	6:41	6:41	6:40
Sunset (PM)	6:42	6:42	6:42	6:42	6:42	6:42	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:41	6:40	6:40	6:40	6:40	6:40	6:39	6:39	6:39	6:39	6:39	6:38	6:38	6:38	6:38	6:37

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.9	6:48	6:42
2	11.9	6:48	6:42
3	11.9	6:48	6:42
4	11.9	6:48	6:42
5	11.9	6:48	6:42
6	11.9	6:47	6:42
7	11.9	6:47	6:41
8	11.9	6:47	6:41
9	11.9	6:47	6:41
10	11.9	6:47	6:41
11	11.9	6:47	6:41
12	11.9	6:46	6:41
13	11.9	6:46	6:41
14	11.9	6:46	6:41
15	11.9	6:46	6:41
16	11.9	6:45	6:41
17	11.9	6:45	6:40
18	11.9	6:45	6:40
19	11.9	6:44	6:40
20	11.9	6:44	6:40
21	11.9	6:44	6:40
22	11.9	6:44	6:39
23	11.9	6:43	6:39
24	11.9	6:43	6:39
25	11.9	6:43	6:39
26	11.9	6:42	6:39
27	11.9	6:42	6:38
28	11.9	6:41	6:38
29	11.9	6:41	6:38
30	11.9	6:41	6:38
31	12.0	6:40	6:37

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.74 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 — August's 5.74 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.6	5.6	5.7	5.7	5.7	5.7	5.8	5.8	5.8	5.8	5.8	5.9	5.9	5.9	5.9	6.0	6.0	6.0	6.0	6.0	6.1
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.5	Bright
2	5.5	Bright
3	5.5	Bright
4	5.5	Bright
5	5.5	Bright
6	5.5	Bright
7	5.5	Bright
8	5.6	Bright
9	5.6	Bright
10	5.6	Bright
11	5.6	Bright
12	5.6	Bright
13	5.7	Bright
14	5.7	Bright
15	5.7	Bright
16	5.7	Bright
17	5.8	Bright
18	5.8	Bright
19	5.8	Bright
20	5.8	Bright
21	5.8	Bright
22	5.9	Bright
23	5.9	Bright
24	5.9	Bright
25	5.9	Bright
26	6.0	Bright
27	6.0	Bright
28	6.0	Intense
29	6.0	Intense
30	6.0	Intense
31	6.1	Intense

Planning a trip in August

Hazard calendar for Santarém

In seasonPeak

None of Santarém's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 August a good time to visit Santarém?

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

4.5

Sightseeing

1st-best month of the year

6.5

Beach & pool

2nd-best month of the year

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

What to pack for Santarém in August

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

In August, Santarém sees daytime highs around 31°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Santarém in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	14	15	15	14	11	10	10	10	11	12	10	11
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	15	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	10	Very high
Jul	10	Very high
Aug	10	Extreme
Sep	11	Extreme
Oct	12	Extreme
Nov	10	Extreme
Dec	11	Extreme

Air quality in Santarém in August

GoodModeratePoorUnhealthyVery unhealthy

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	17	16	16	14	10	9	9	12	15	24	31	23
Level	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	17	Moderate
Feb	16	Moderate
Mar	16	Moderate
Apr	14	Moderate
May	10	Good
Jun	9	Good
Jul	9	Good
Aug	12	Good
Sep	15	Moderate
Oct	24	Moderate
Nov	31	Moderate
Dec	23	Moderate

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

artificial surfaces 65%

16 km

198 m

water 40%

80 km

281 m

trees 49%

treesgrasslandartificial surfacesbare terrainwaterwetland

← July Santarém year-round climate September →Best places to visit in August

August 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

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).

	Avg high (°C)	Avg low (°C)
1	30	25
2	30	25
3	30	25
4	30	25
5	30	25
6	30	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	25
14	31	25
15	31	25
16	31	25
17	31	25
18	31	25
19	31	25
20	31	26
21	31	26
22	31	26
23	31	26
24	31	26
25	31	26
26	31	26
27	31	26
28	31	26
29	31	26
30	31	26
31	31	26

	Clearer (%)	Cloudier (%)
1	75	25
2	75	25
3	75	25
4	75	25
5	74	26
6	74	26
7	73	27
8	73	27
9	72	28
10	72	28
11	72	28
12	72	28
13	72	28
14	73	27
15	74	26
16	74	26
17	74	26
18	74	26
19	75	25
20	76	24
21	76	24
22	76	24
23	76	24
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	72	28
31	72	28

	Rain chance (%)
1	45
2	45
3	44
4	44
5	44
6	44
7	44
8	44
9	44
10	45
11	45
12	45
13	45
14	44
15	44
16	44
17	43
18	43
19	42
20	42
21	41
22	40
23	40
24	39
25	39
26	39
27	39
28	39
29	38
30	38
31	38

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	95	5
20	95	5
21	95	5
22	95	5
23	95	5
24	95	5
25	95	5
26	96	4
27	96	4
28	96	4
29	95	5
30	95	5
31	95	5

	Avg high (°C)	Avg low (°C)
1	30	25
2	30	25
3	30	25
4	30	25
5	30	25
6	30	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	25
14	31	25
15	31	25
16	31	25
17	31	25
18	31	25
19	31	25
20	31	26
21	31	26
22	31	26
23	31	26
24	31	26
25	31	26
26	31	26
27	31	26
28	31	26
29	31	26
30	31	26
31	31	26

	Clearer (%)	Cloudier (%)
1	75	25
2	75	25
3	75	25
4	75	25
5	74	26
6	74	26
7	73	27
8	73	27
9	72	28
10	72	28
11	72	28
12	72	28
13	72	28
14	73	27
15	74	26
16	74	26
17	74	26
18	74	26
19	75	25
20	76	24
21	76	24
22	76	24
23	76	24
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	72	28
31	72	28

	Rain chance (%)
1	45
2	45
3	44
4	44
5	44
6	44
7	44
8	44
9	44
10	45
11	45
12	45
13	45
14	44
15	44
16	44
17	43
18	43
19	42
20	42
21	41
22	40
23	40
24	39
25	39
26	39
27	39
28	39
29	38
30	38
31	38

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	95	5
20	95	5
21	95	5
22	95	5
23	95	5
24	95	5
25	95	5
26	96	4
27	96	4
28	96	4
29	95	5
30	95	5
31	95	5

	Avg high (°C)	Avg low (°C)
1	30	25
2	30	25
3	30	25
4	30	25
5	30	25
6	30	25
7	31	25
8	31	25
9	31	25
10	31	25
11	31	25
12	31	25
13	31	25
14	31	25
15	31	25
16	31	25
17	31	25
18	31	25
19	31	25
20	31	26
21	31	26
22	31	26
23	31	26
24	31	26
25	31	26
26	31	26
27	31	26
28	31	26
29	31	26
30	31	26
31	31	26

	Clearer (%)	Cloudier (%)
1	75	25
2	75	25
3	75	25
4	75	25
5	74	26
6	74	26
7	73	27
8	73	27
9	72	28
10	72	28
11	72	28
12	72	28
13	72	28
14	73	27
15	74	26
16	74	26
17	74	26
18	74	26
19	75	25
20	76	24
21	76	24
22	76	24
23	76	24
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	72	28
31	72	28

	Rain chance (%)
1	45
2	45
3	44
4	44
5	44
6	44
7	44
8	44
9	44
10	45
11	45
12	45
13	45
14	44
15	44
16	44
17	43
18	43
19	42
20	42
21	41
22	40
23	40
24	39
25	39
26	39
27	39
28	39
29	38
30	38
31	38

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	94	6
9	94	6
10	94	6
11	94	6
12	94	6
13	94	6
14	95	5
15	95	5
16	95	5
17	95	5
18	95	5
19	95	5
20	95	5
21	95	5
22	95	5
23	95	5
24	95	5
25	95	5
26	96	4
27	96	4
28	96	4
29	95	5
30	95	5
31	95	5