Rengo weather in May

In May, Rengo sees average daytime highs of 15°C and overnight lows near 3°C, with 127 mm of precipitation across 8 wet days and about 10.2 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 16°C in the first days to 13°C by the end. The sky is clear or mostly clear about 39% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 36 min at the start of May to 9 h 54 min by month's end. Set against the rest of the year, May is Rengo's 10th-clearest and 8th-windiest month. For the whole year in context, see Rengo's year-round climate.

Daytime high
15°
8th warmest
Overnight low
5th coldest
Precipitation
127 mm
8 wet days
Daylight
10 h 12 min
8:33 AM – 6:46 PM
Cloud cover
54%
10th clearest
Wind
4 km/h
8th windiest
Solar energy
2.84 kWh/m²
Travel score
4.7
out of 10

Rengo is municipality in Chile.

Air quality
Elevated
PM2.5 23.8 µg/m³ · 2019

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 16°C in the first days to 13°C by the end.

A typical May day in Rengo reaches about 15°C in the afternoon and slips back to 3°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 19°C. Set against its neighbours, May runs about 4°C cooler than April and about 4°C warmer than June.

10°20°151015202531
Avg high (°C)Avg low (°C)
1174
2174
3164
4164
5164
6164
7164
8164
9164
10164
11153
12153
13153
14153
15153
16153
17143
18143
19143
20143
21143
22143
23133
24132
25132
26132
27132
28132
29132
30132
31122

How May really feels in Rengo

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Rengo weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan24° / 11°102.20149.2
Feb24° / 11°112.3013.39.1
Mar22° / 142.4012.38.7
Apr18° / 574.70.411.27.0
May15° / 12782.110.24.7
Jun11° / 20910.65.69.72.6
Jul10° / -0°1479.769.92.5
Aug12° / 1238.75.210.73.3
Sep14° / 848.92.911.84.3
Oct17° / 598.71.712.95.8
Nov20° / 356.90.313.87.2
Dec23° / 193.80.114.38.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26337
36238
46139
56040
65941
75743
85743
95644
105545
115446
125347
135248
145149
154951
164852
174852
184753
194654
204654
214555
224555
234555
244456
254357
264456
274456
284456
294456
304456
314555

Chance of precipitation in May

Any precipitationSnow

Rengo gets around 127 mm of rain and snow over 8 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 25% and peaks near 33% on the wettest days, and about 2 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1182
2182
3182
4182
5182
6182
7192
8193
9193
10203
11203
12214
13224
14224
15235
16245
17256
18267
19277
20288
21299
223010
233110
243211
253212
263312
273313
283313
293314
303314
313315

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.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 36 min at the start of May to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over May. Sunrise moves from 8:21 AM to 8:44 AM, and sunset from 7:00 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.68:217:00
210.68:226:59
310.68:236:58
410.58:246:57
510.58:256:56
610.58:256:55
710.58:266:54
810.48:276:53
910.48:286:52
1010.48:296:51
1110.38:296:50
1210.38:306:49
1310.38:316:48
1410.38:326:48
1510.28:336:47
1610.28:336:46
1710.28:346:45
1810.28:356:45
1910.18:366:44
2010.18:366:43
2110.18:376:43
2210.18:386:42
2310.08:396:41
2410.08:396:41
2510.08:406:40
2610.08:416:40
2710.08:416:39
289.98:426:39
299.98:436:38
309.98:436:38
319.98:446:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.84 kWh/m².

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 8.84 kWh/m² in January across the year — May's 2.84 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.3Moderate
73.3Moderate
83.2Moderate
93.2Moderate
103.1Moderate
113.1Moderate
123.0Moderate
133.0Moderate
142.9Moderate
152.9Moderate
162.8Moderate
172.8Moderate
182.7Moderate
192.7Moderate
202.6Moderate
212.6Moderate
222.6Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.4Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.3Moderate
Planning a trip in May

Hazard calendar for Rengo

In seasonPeak

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

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

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

Is May a good time to visit Rengo?

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

4.7
Sightseeing
8th-best month of the year
0.3
Beach & pool
8th-best month of the year

May is a reasonable time to visit Rengo for sightseeing.

What to pack for Rengo in May

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

In May, Rengo sees daytime highs around 15°C and nights near 3°C. Worth packing: a warm layer and rain gear. About 8 days see rain.

a warm layerrain gear

UV index in Rengo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rengo peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near May 24 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 17UV 13May 24UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Very high
Apr5High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug3Moderate
Sep6High
Oct9Very high
Nov11Extreme
Dec12Extreme

Air quality in Rengo in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Rengo is worst in July — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Rengo's WHO annual average of 23.8 µg/m³.

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 1832 µg/m³Dec 1216 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb17Moderate
Mar17Moderate
Apr23Moderate
May31Moderate
Jun31Moderate
Jul32Moderate
Aug31Moderate
Sep29Moderate
Oct22Moderate
Nov17Moderate
Dec16Moderate
Location & terrain

Where is Rengo?

Rengo sits at 34.4°S, 70.9°W, 326 m above sea level, in Chile. The nearest listed city is San Vicente de Tagua Tagua, 20 km away.

Topography around Rengo

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

Within 3 km, the terrain around Rengo has only modest variations in elevation — a maximum elevation change of 96 m around an average of 320 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,632 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,128 m.

The land around Rengo is covered by cropland (41%), trees (24%) and artificial surfaces (22%) within 3 km, cropland (34%), trees (28%) and shrubs (23%) within 16 km, and trees (23%), bare terrain (22%) and grassland (20%) within 80 km.

3 km
96 m
16 km
1,632 m
80 km
5,128 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainsnow and icewater
May weather nearby: San Vicente de Tagua Tagua 20 km · San Vicente 21 km · Rancagua 29 km · Machalí 32 km · Chimbarongo 38 km · Graneros 39 km · Santa Cruz 53 km · Paine 67 km

Chile travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$17,995
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
6.3
per 100k, 2023
Road deaths
14.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 517
Religion
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

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 Rengo (-34.4064°, -70.8583°, elevation 326 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).