Trelew weather in May

In May, Trelew sees average daytime highs of 16°C and overnight lows near 6°C, with 23 mm of rain across 4 wet days and about 9.5 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 14°C by the end. The sky is clear or mostly clear about 41% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 06 min at the start of May to 9 h 06 min by month's end. Set against the rest of the year, May is Trelew's 12th-clearest and 12th-windiest month. For the whole year in context, see Trelew's year-round climate.

Daytime high: 16°; 9th warmest
Overnight low: 6°; 5th coldest
Rainfall: 23 mm; 4 wet days
Daylight: 9 h 30 min; 8:32 AM – 6:03 PM
Cloud cover: 51%; 12th clearest
Wind: 17 km/h; 12th windiest
Solar energy: 2.06 kWh/m²
Travel score: 5.6; out of 10

Trelew is city in Argentina.

Density: 393/km²; people per km²
Founded: 1886

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

← April Trelew 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 18°C in the first days to 14°C by the end.

A typical May day in Trelew reaches about 16°C in the afternoon and slips back to 6°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 20°C. Set against its neighbours, May runs about 4°C cooler than April and about 4°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)	18	18	18	18	17	17	17	17	17	17	17	16	16	16	16	16	15	15	15	15	15	15	14	14	14	14	14	14	14	13	13
Avg low (°C)	8	8	8	8	8	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	6	5	5	5	5	5	5	5	5	4	4

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

How May really feels in Trelew

Once humidity and wind are folded in, May averages 0 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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Trelew weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	28° / 16°	15	3	14.8	7.9
Feb	27° / 15°	22	3.7	13.8	8.0
Mar	24° / 13°	21	3.5	12.4	8.2
Apr	20° / 10°	19	2.9	10.8	7.6
May	16° / 6°	23	4	9.5	5.6
Jun	12° / 3°	23	4.1	8.9	3.8
Jul	12° / 3°	14	3.5	9.1	3.7
Aug	14° / 4°	14	3.4	10.2	4.9
Sep	17° / 6°	18	4	11.7	6.2
Oct	20° / 9°	18	4.1	13.2	7.4
Nov	23° / 12°	16	3.2	14.5	8.2
Dec	26° / 14°	18	3	15.1	8.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 45%.

	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 (%)	60	60	59	58	58	57	56	56	55	54	54	53	53	53	53	53	53	53	52	53	53	53	54	53	54	54	55	55	55	55	56
Cloudier (%)	40	40	41	42	42	43	44	44	45	46	46	47	47	47	47	47	47	47	48	47	47	47	46	47	46	46	45	45	45	45	44

	Clearer (%)	Cloudier (%)
1	60	40
2	60	40
3	59	41
4	58	42
5	58	42
6	57	43
7	56	44
8	56	44
9	55	45
10	54	46
11	54	46
12	53	47
13	53	47
14	53	47
15	53	47
16	53	47
17	53	47
18	53	47
19	52	48
20	53	47
21	53	47
22	53	47
23	54	46
24	53	47
25	54	46
26	54	46
27	55	45
28	55	45
29	55	45
30	55	45
31	56	44

Chance of precipitation in May

Any precipitation

Trelew gets around 23 mm of rain over 4 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 13% and peaks near 15% 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 (%)	10	10	10	10	10	10	10	10	11	11	11	12	12	13	13	14	14	14	15	15	15	15	15	15	15	14	14	14	14	14	13

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

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in May

Winds average 17 km/h in May, the calmest month.

Across May, daily wind ranges from about 16 km/h on the calmest days to 17 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)	17	17	17	17	17	17	17	17	17	17	17	17	17	16	16	16	16	16	16	16	16	17	17	17	17	17	17	17	17	17	17
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

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

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 06 min at the start of May to 9 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over May. Sunrise moves from 8:15 AM to 8:47 AM, and sunset from 6:22 PM to 5:51 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)	10.1	10.1	10.0	10.0	10.0	9.9	9.9	9.8	9.8	9.7	9.7	9.7	9.6	9.6	9.6	9.5	9.5	9.5	9.4	9.4	9.4	9.3	9.3	9.3	9.2	9.2	9.2	9.1	9.1	9.1	9.1
Sunrise (AM)	8:15	8:16	8:17	8:18	8:19	8:21	8:22	8:23	8:24	8:25	8:26	8:27	8:29	8:30	8:31	8:32	8:33	8:34	8:35	8:36	8:37	8:38	8:39	8:40	8:41	8:42	8:43	8:44	8:45	8:46	8:47
Sunset (PM)	6:22	6:21	6:19	6:18	6:16	6:15	6:14	6:13	6:11	6:10	6:09	6:08	6:06	6:05	6:04	6:03	6:02	6:01	6:00	5:59	5:58	5:57	5:56	5:56	5:55	5:54	5:53	5:53	5:52	5:51	5:51

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.1	8:15	6:22
2	10.1	8:16	6:21
3	10.0	8:17	6:19
4	10.0	8:18	6:18
5	10.0	8:19	6:16
6	9.9	8:21	6:15
7	9.9	8:22	6:14
8	9.8	8:23	6:13
9	9.8	8:24	6:11
10	9.7	8:25	6:10
11	9.7	8:26	6:09
12	9.7	8:27	6:08
13	9.6	8:29	6:06
14	9.6	8:30	6:05
15	9.6	8:31	6:04
16	9.5	8:32	6:03
17	9.5	8:33	6:02
18	9.5	8:34	6:01
19	9.4	8:35	6:00
20	9.4	8:36	5:59
21	9.4	8:37	5:58
22	9.3	8:38	5:57
23	9.3	8:39	5:56
24	9.3	8:40	5:56
25	9.2	8:41	5:55
26	9.2	8:42	5:54
27	9.2	8:43	5:53
28	9.1	8:44	5:53
29	9.1	8:45	5:52
30	9.1	8:46	5:51
31	9.1	8:47	5:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.06 kWh/m².

For context, solar energy here swings from a low near 1.6 kWh/m² to a high of 8.09 kWh/m² in December across the year — May's 2.06 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)	2.6	2.5	2.5	2.5	2.4	2.4	2.4	2.3	2.3	2.2	2.2	2.2	2.1	2.1	2.1	2.0	2.0	2.0	2.0	1.9	1.9	1.9	1.9	1.9	1.8	1.8	1.8	1.8	1.8	1.8	1.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim

	Solar energy (kWh/m²)	Level
1	2.6	Moderate
2	2.5	Moderate
3	2.5	Moderate
4	2.5	Moderate
5	2.4	Moderate
6	2.4	Moderate
7	2.4	Moderate
8	2.3	Moderate
9	2.3	Moderate
10	2.2	Moderate
11	2.2	Moderate
12	2.2	Moderate
13	2.1	Moderate
14	2.1	Moderate
15	2.1	Moderate
16	2.0	Moderate
17	2.0	Moderate
18	2.0	Dim
19	2.0	Dim
20	1.9	Dim
21	1.9	Dim
22	1.9	Dim
23	1.9	Dim
24	1.9	Dim
25	1.8	Dim
26	1.8	Dim
27	1.8	Dim
28	1.8	Dim
29	1.8	Dim
30	1.8	Dim
31	1.7	Dim

Planning a trip in May

Is May a good time to visit Trelew?

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

5.6

Sightseeing

9th-best month of the year

0.8

Beach & pool

9th-best month of the year

May is a reasonable time to visit Trelew for sightseeing.

What to pack for Trelew in May

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

In May, Trelew sees daytime highs around 16°C and nights near 6°C. Worth packing: a warm layer. About 4 days see rain.

a warm layer

Sea temperature near Trelew in May

The nearest coast averages about 13°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 38 km away) is warmest in February at about 17°C and coldest in August near 9°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	17	17	17	15	13	12	10	9	9	11	13	15
Comfort	Cool	Cool	Cool	Cool	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	17	Cool
Feb	17	Cool
Mar	17	Cool
Apr	15	Cool
May	13	Bracing
Jun	12	Bracing
Jul	10	Bracing
Aug	9	Bracing
Sep	9	Bracing
Oct	11	Bracing
Nov	13	Bracing
Dec	15	Bracing

UV index in Trelew in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Trelew peaks around December 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	11	10	7	4	2	1	2	2	4	7	9	12
Level	Extreme	Extreme	High	Moderate	Moderate	Low	Low	Moderate	Moderate	High	Very high	Extreme

	UV index (midday)	Level
Jan	11	Extreme
Feb	10	Extreme
Mar	7	High
Apr	4	Moderate
May	2	Moderate
Jun	1	Low
Jul	2	Low
Aug	2	Moderate
Sep	4	Moderate
Oct	7	High
Nov	9	Very high
Dec	12	Extreme

Location & terrain

Where is Trelew?

Trelew sits at 43.2°S, 65.3°W, 14 m above sea level, in Argentina. The nearest listed city is Rawson, 17 km away.

Topography around Trelew

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

Within 3 km, the terrain around Trelew has only modest variations in elevation — a maximum elevation change of 35 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 205 m; within 80 km, significant variations in elevation — a maximum elevation change of 336 m.

The land around Trelew is covered by artificial surfaces (51%), grassland (22%) and shrubs (20%) within 3 km, shrubs (67%) and grassland (20%) within 16 km, and shrubs (65%) and water (25%) within 80 km.

3 km

35 m

artificial surfaces 51%

16 km

205 m

shrubs 67%

80 km

336 m

shrubs 65%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

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

May weather nearby: Rawson 17 km · Puerto Madryn 58 km · San Antonio Oeste 281 km · Viedma 331 km · Carmen de Patagones 333 km · Comodoro Rivadavia 338 km · Caleta Olivia 396 km · Pico Truncado 446 km

Argentina travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / I; 220 V · 50 Hz
Prices: ≈ 46% of US; price level, 2025
GDP per capita: $14,898; 2025
Happiness: 6.4 / 10; World Happiness, 2025
Homicide rate: 4.5; per 100k, 2023
Road deaths: 14.1; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: High; EF EPI 575
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 Trelew (-43.249°, -65.305°, elevation 14 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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	18	8
2	18	8
3	18	8
4	18	8
5	17	8
6	17	7
7	17	7
8	17	7
9	17	7
10	17	7
11	17	7
12	16	7
13	16	7
14	16	7
15	16	6
16	16	6
17	15	6
18	15	6
19	15	6
20	15	6
21	15	6
22	15	5
23	14	5
24	14	5
25	14	5
26	14	5
27	14	5
28	14	5
29	14	5
30	13	4
31	13	4

	Clearer (%)	Cloudier (%)
1	60	40
2	60	40
3	59	41
4	58	42
5	58	42
6	57	43
7	56	44
8	56	44
9	55	45
10	54	46
11	54	46
12	53	47
13	53	47
14	53	47
15	53	47
16	53	47
17	53	47
18	53	47
19	52	48
20	53	47
21	53	47
22	53	47
23	54	46
24	53	47
25	54	46
26	54	46
27	55	45
28	55	45
29	55	45
30	55	45
31	56	44

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

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

	Clearer (%)	Cloudier (%)
1	60	40
2	60	40
3	59	41
4	58	42
5	58	42
6	57	43
7	56	44
8	56	44
9	55	45
10	54	46
11	54	46
12	53	47
13	53	47
14	53	47
15	53	47
16	53	47
17	53	47
18	53	47
19	52	48
20	53	47
21	53	47
22	53	47
23	54	46
24	53	47
25	54	46
26	54	46
27	55	45
28	55	45
29	55	45
30	55	45
31	56	44

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

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

	Clearer (%)	Cloudier (%)
1	60	40
2	60	40
3	59	41
4	58	42
5	58	42
6	57	43
7	56	44
8	56	44
9	55	45
10	54	46
11	54	46
12	53	47
13	53	47
14	53	47
15	53	47
16	53	47
17	53	47
18	53	47
19	52	48
20	53	47
21	53	47
22	53	47
23	54	46
24	53	47
25	54	46
26	54	46
27	55	45
28	55	45
29	55	45
30	55	45
31	56	44

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

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100