Santiago weather in May

In May, Santiago sees average daytime highs of 21°C and overnight lows near 12°C, with 125 mm of rain across 9.4 wet days and about 10.6 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 19°C by the end. The sky is clear or mostly clear about 36% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of May to 10 h 18 min by month's end. Set against the rest of the year, May is Santiago's 10th-clearest and 9th-windiest month. For the whole year in context, see Santiago's year-round climate.

Daytime high: 21°; 9th warmest
Overnight low: 12°; 4th coldest
Rainfall: 125 mm; 9.4 wet days
Daylight: 10 h 30 min; 8:19 AM – 6:52 PM
Cloud cover: 57%; 10th clearest
Wind: 11 km/h; 9th windiest
Solar energy: 2.99 kWh/m²
Travel score: 6.6; out of 10

Santiago is human settlement in Brazil.

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

← April Santiago year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 19°C by the end.

A typical May day in Santiago reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, May runs about 4°C cooler than April and about 2°C warmer than June.

	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)	23	23	23	23	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	20	20	20	20	20	20	20	20	20	20	19	19
Avg low (°C)	14	13	13	13	13	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	11

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

Santiago weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	30° / 20°	174	14.2	13.7	4.6
Feb	29° / 19°	154	13.4	13	4.9
Mar	28° / 18°	144	11.7	12.2	5.9
Apr	25° / 15°	161	10.5	11.3	6.8
May	21° / 12°	125	9.4	10.6	6.6
Jun	19° / 10°	136	9.9	10.2	6.1
Jul	19° / 9°	150	9.9	10.3	6.2
Aug	21° / 11°	130	9.2	11	6.8
Sep	22° / 12°	160	10.5	11.8	6.6
Oct	25° / 15°	236	12.6	12.7	6.5
Nov	27° / 16°	155	10.4	13.5	6.4
Dec	29° / 18°	169	12.2	13.8	5.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

	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 (%)	51	51	51	51	50	50	49	49	49	49	49	48	48	48	48	48	48	49	49	49	49	48	48	48	48	47	47	47	47	46	47
Cloudier (%)	49	49	49	49	50	50	51	51	51	51	51	52	52	52	52	52	52	51	51	51	51	52	52	52	52	53	53	53	53	54	53

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	50	50
6	50	50
7	49	51
8	49	51
9	49	51
10	49	51
11	49	51
12	48	52
13	48	52
14	48	52
15	48	52
16	48	52
17	48	52
18	49	51
19	49	51
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	48	52
26	47	53
27	47	53
28	47	53
29	47	53
30	46	54
31	47	53

Chance of precipitation in May

Any precipitation

Santiago gets around 125 mm of rain over 9.4 wet days in May, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 32% on the wettest days.

	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 (%)	32	32	31	31	31	30	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	30	30	30	30	30	30	29	29	29

	Rain chance (%)
1	32
2	32
3	31
4	31
5	31
6	30
7	30
8	30
9	30
10	30
11	30
12	30
13	30
14	30
15	30
16	30
17	30
18	31
19	31
20	31
21	31
22	31
23	30
24	30
25	30
26	30
27	30
28	30
29	29
30	29
31	29

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 7% 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
Dry (%)	38	39	40	41	42	43	44	45	46	47	47	48	49	49	50	50	51	52	52	53	53	55	56	57	57	57	59	59	61	61	61
Comfortable (%)	25	25	25	25	25	25	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	25	25	24	24	24	23	23	22	22	22
Humid (%)	21	21	21	20	20	20	20	19	19	19	19	18	18	18	18	18	17	17	17	16	16	16	15	15	15	15	14	14	14	14	14
Muggy (%)	15	14	14	13	12	11	10	10	9	8	8	7	7	6	6	6	6	5	5	5	5	4	4	4	4	4	4	4	3	3	3

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	25	21	15
2	39	25	21	14
3	40	25	21	14
4	41	25	20	13
5	42	25	20	12
6	43	25	20	11
7	44	26	20	10
8	45	26	19	10
9	46	26	19	9
10	47	26	19	8
11	47	26	19	8
12	48	26	18	7
13	49	26	18	7
14	49	26	18	6
15	50	26	18	6
16	50	26	18	6
17	51	26	17	6
18	52	26	17	5
19	52	26	17	5
20	53	26	16	5
21	53	26	16	5
22	55	25	16	4
23	56	25	15	4
24	57	24	15	4
25	57	24	15	4
26	57	24	15	4
27	59	23	14	4
28	59	23	14	4
29	61	22	14	3
30	61	22	14	3
31	61	22	14	3

Wind in May

Winds average 11 km/h in May.

Across May, 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	11	11	11	11	11	11	11	11	11	11	11	11	11	11	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	11	calm
11	11	calm
12	11	calm
13	11	calm
14	11	calm
15	11	calm
16	11	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	11	calm
22	11	calm
23	11	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 May

DaylightNight

Daylight runs from about 10 h 54 min at the start of May to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over May. Sunrise moves from 8:10 AM to 8:28 AM, and sunset from 7:03 PM to 6:45 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)	10.9	10.9	10.8	10.8	10.8	10.8	10.7	10.7	10.7	10.7	10.7	10.6	10.6	10.6	10.6	10.5	10.5	10.5	10.5	10.5	10.4	10.4	10.4	10.4	10.4	10.4	10.3	10.3	10.3	10.3	10.3
Sunrise (AM)	8:10	8:11	8:11	8:12	8:12	8:13	8:14	8:14	8:15	8:16	8:16	8:17	8:17	8:18	8:19	8:19	8:20	8:21	8:21	8:22	8:22	8:23	8:24	8:24	8:25	8:25	8:26	8:27	8:27	8:28	8:28
Sunset (PM)	7:03	7:03	7:02	7:01	7:00	6:59	6:58	6:58	6:57	6:56	6:55	6:55	6:54	6:53	6:53	6:52	6:51	6:51	6:50	6:50	6:49	6:49	6:48	6:48	6:47	6:47	6:47	6:46	6:46	6:46	6:45

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.9	8:10	7:03
2	10.9	8:11	7:03
3	10.8	8:11	7:02
4	10.8	8:12	7:01
5	10.8	8:12	7:00
6	10.8	8:13	6:59
7	10.7	8:14	6:58
8	10.7	8:14	6:58
9	10.7	8:15	6:57
10	10.7	8:16	6:56
11	10.7	8:16	6:55
12	10.6	8:17	6:55
13	10.6	8:17	6:54
14	10.6	8:18	6:53
15	10.6	8:19	6:53
16	10.5	8:19	6:52
17	10.5	8:20	6:51
18	10.5	8:21	6:51
19	10.5	8:21	6:50
20	10.5	8:22	6:50
21	10.4	8:22	6:49
22	10.4	8:23	6:49
23	10.4	8:24	6:48
24	10.4	8:24	6:48
25	10.4	8:25	6:47
26	10.4	8:25	6:47
27	10.3	8:26	6:47
28	10.3	8:27	6:46
29	10.3	8:27	6:46
30	10.3	8:28	6:46
31	10.3	8:28	6:45

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.99 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 — May's 2.99 kWh/m² sits near the bottom.

	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)	3.4	3.4	3.4	3.3	3.3	3.3	3.3	3.2	3.2	3.1	3.1	3.1	3.1	3.0	3.0	3.0	3.0	2.9	2.9	2.9	2.9	2.8	2.8	2.8	2.8	2.8	2.7	2.7	2.7	2.7	2.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.4	Moderate
2	3.4	Moderate
3	3.4	Moderate
4	3.3	Moderate
5	3.3	Moderate
6	3.3	Moderate
7	3.3	Moderate
8	3.2	Moderate
9	3.2	Moderate
10	3.1	Moderate
11	3.1	Moderate
12	3.1	Moderate
13	3.1	Moderate
14	3.0	Moderate
15	3.0	Moderate
16	3.0	Moderate
17	3.0	Moderate
18	2.9	Moderate
19	2.9	Moderate
20	2.9	Moderate
21	2.9	Moderate
22	2.8	Moderate
23	2.8	Moderate
24	2.8	Moderate
25	2.8	Moderate
26	2.8	Moderate
27	2.7	Moderate
28	2.7	Moderate
29	2.7	Moderate
30	2.7	Moderate
31	2.7	Moderate

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).

6.6

Sightseeing

3rd-best month of the year

4.1

Beach & pool

9th-best month of the year

May is a reasonable time to visit Santiago for sightseeing.

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 21°C and nights near 12°C. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Santiago in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	14	13	10	8	5	3	4	5	8	6	11	12
Level	Extreme	Extreme	Extreme	Very high	Moderate	Moderate	Moderate	Moderate	Very high	High	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	13	Extreme
Mar	10	Extreme
Apr	8	Very high
May	5	Moderate
Jun	3	Moderate
Jul	4	Moderate
Aug	5	Moderate
Sep	8	Very high
Oct	6	High
Nov	11	Extreme
Dec	12	Extreme

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

grassland 39%

16 km

285 m

grassland 53%

80 km

475 m

cropland 41%

treesgrasslandcroplandartificial surfaces

← April Santiago year-round climate June →Best places to visit in May

May 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

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).

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

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	50	50
6	50	50
7	49	51
8	49	51
9	49	51
10	49	51
11	49	51
12	48	52
13	48	52
14	48	52
15	48	52
16	48	52
17	48	52
18	49	51
19	49	51
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	48	52
26	47	53
27	47	53
28	47	53
29	47	53
30	46	54
31	47	53

	Rain chance (%)
1	32
2	32
3	31
4	31
5	31
6	30
7	30
8	30
9	30
10	30
11	30
12	30
13	30
14	30
15	30
16	30
17	30
18	31
19	31
20	31
21	31
22	31
23	30
24	30
25	30
26	30
27	30
28	30
29	29
30	29
31	29

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	25	21	15
2	39	25	21	14
3	40	25	21	14
4	41	25	20	13
5	42	25	20	12
6	43	25	20	11
7	44	26	20	10
8	45	26	19	10
9	46	26	19	9
10	47	26	19	8
11	47	26	19	8
12	48	26	18	7
13	49	26	18	7
14	49	26	18	6
15	50	26	18	6
16	50	26	18	6
17	51	26	17	6
18	52	26	17	5
19	52	26	17	5
20	53	26	16	5
21	53	26	16	5
22	55	25	16	4
23	56	25	15	4
24	57	24	15	4
25	57	24	15	4
26	57	24	15	4
27	59	23	14	4
28	59	23	14	4
29	61	22	14	3
30	61	22	14	3
31	61	22	14	3

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

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	50	50
6	50	50
7	49	51
8	49	51
9	49	51
10	49	51
11	49	51
12	48	52
13	48	52
14	48	52
15	48	52
16	48	52
17	48	52
18	49	51
19	49	51
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	48	52
26	47	53
27	47	53
28	47	53
29	47	53
30	46	54
31	47	53

	Rain chance (%)
1	32
2	32
3	31
4	31
5	31
6	30
7	30
8	30
9	30
10	30
11	30
12	30
13	30
14	30
15	30
16	30
17	30
18	31
19	31
20	31
21	31
22	31
23	30
24	30
25	30
26	30
27	30
28	30
29	29
30	29
31	29

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	25	21	15
2	39	25	21	14
3	40	25	21	14
4	41	25	20	13
5	42	25	20	12
6	43	25	20	11
7	44	26	20	10
8	45	26	19	10
9	46	26	19	9
10	47	26	19	8
11	47	26	19	8
12	48	26	18	7
13	49	26	18	7
14	49	26	18	6
15	50	26	18	6
16	50	26	18	6
17	51	26	17	6
18	52	26	17	5
19	52	26	17	5
20	53	26	16	5
21	53	26	16	5
22	55	25	16	4
23	56	25	15	4
24	57	24	15	4
25	57	24	15	4
26	57	24	15	4
27	59	23	14	4
28	59	23	14	4
29	61	22	14	3
30	61	22	14	3
31	61	22	14	3

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

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	50	50
6	50	50
7	49	51
8	49	51
9	49	51
10	49	51
11	49	51
12	48	52
13	48	52
14	48	52
15	48	52
16	48	52
17	48	52
18	49	51
19	49	51
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	48	52
26	47	53
27	47	53
28	47	53
29	47	53
30	46	54
31	47	53

	Rain chance (%)
1	32
2	32
3	31
4	31
5	31
6	30
7	30
8	30
9	30
10	30
11	30
12	30
13	30
14	30
15	30
16	30
17	30
18	31
19	31
20	31
21	31
22	31
23	30
24	30
25	30
26	30
27	30
28	30
29	29
30	29
31	29

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	38	25	21	15
2	39	25	21	14
3	40	25	21	14
4	41	25	20	13
5	42	25	20	12
6	43	25	20	11
7	44	26	20	10
8	45	26	19	10
9	46	26	19	9
10	47	26	19	8
11	47	26	19	8
12	48	26	18	7
13	49	26	18	7
14	49	26	18	6
15	50	26	18	6
16	50	26	18	6
17	51	26	17	6
18	52	26	17	5
19	52	26	17	5
20	53	26	16	5
21	53	26	16	5
22	55	25	16	4
23	56	25	15	4
24	57	24	15	4
25	57	24	15	4
26	57	24	15	4
27	59	23	14	4
28	59	23	14	4
29	61	22	14	3
30	61	22	14	3
31	61	22	14	3