Ascención de Guarayos weather in May

In May, Ascención de Guarayos sees average daytime highs of 27°C and overnight lows near 19°C, with 71 mm of rain across 10.3 wet days and about 11.3 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 27°C by the end. The sky is clear or mostly clear about 32% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 24 min at the start of May to 11 h 06 min by month's end. Set against the rest of the year, May is Ascención de Guarayos's 5th-clearest and 6th-windiest month. For the whole year in context, see Ascención de Guarayos's year-round climate.

Daytime high
27°
10th warmest
Overnight low
19°
4th coldest
Rainfall
71 mm
10.3 wet days
Daylight
11 h 18 min
6:31 AM – 5:47 PM
Cloud cover
61%
5th clearest
Wind
9 km/h
6th windiest
Solar energy
3.89 kWh/m²
Travel score
6.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 27°C by the end.

A typical May day in Ascención de Guarayos reaches about 27°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°C. Set against its neighbours, May runs about 2°C cooler than April and on par with June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22920
32820
42820
52820
62820
72820
82820
92820
102820
112820
122819
132819
142819
152819
162719
172719
182719
192719
202719
212719
222719
232719
242719
252719
262719
272719
282718
292718
302718
312718

How May really feels in Ascención de Guarayos

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.

Ascención de Guarayos weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°29525.512.83.1
Feb30° / 23°24622.912.53.2
Mar30° / 23°18522.512.13.5
Apr29° / 21°10414.311.74.7
May27° / 19°7110.311.36.2
Jun27° / 18°537.111.17.0
Jul27° / 17°354.811.17.4
Aug30° / 18°455.111.55.9
Sep31° / 21°92911.94.5
Oct32° / 22°13915.112.43.7
Nov31° / 22°1931912.73.5
Dec30° / 23°24224.212.93.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34852
44852
54753
64852
74753
84753
94852
104654
114753
124852
134753
144852
154852
164753
174852
184852
194753
204753
214753
224753
234852
244753
254753
264852
274852
284951
294951
305050
315149

Chance of precipitation in May

Any precipitation

Ascención de Guarayos gets around 71 mm of rain over 10.3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 33% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
333
433
533
633
733
833
933
1033
1133
1233
1334
1434
1534
1635
1735
1835
1936
2035
2135
2235
2334
2434
2533
2633
2733
2832
2931
3031
3130

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 66% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
185916566
2961016536
3961017535
4961018525
5971118514
6971118514
7981119493
8981219493
9991219483
10991219482
119101320472
129101320472
139111320471
149111320461
159111319461
169121319460
179121319460
189121419460
1910131419450
2010131419440
2110141419440
2210141419430
2310141419420
2411141420410
2511141420410
2611141520400
2712131521390
2812131521390
2912131522380
3012131522370
3112131523370

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 24 min at the start of May to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over May. Sunrise moves from 6:27 AM to 6:36 AM, and sunset from 5:53 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:275:53
211.46:275:53
311.46:275:52
411.46:285:52
511.46:285:51
611.46:285:51
711.46:285:50
811.46:295:50
911.36:295:49
1011.36:295:49
1111.36:305:49
1211.36:305:48
1311.36:305:48
1411.36:315:47
1511.36:315:47
1611.36:315:47
1711.36:315:47
1811.26:325:46
1911.26:325:46
2011.26:325:46
2111.26:335:46
2211.26:335:45
2311.26:335:45
2411.26:345:45
2511.26:345:45
2611.26:345:45
2711.26:355:45
2811.26:355:44
2911.16:355:44
3011.16:365:44
3111.16:365:44

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.89 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 5.6 kWh/m² in October across the year — May's 3.89 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.1Bright
94.1Bright
104.1Bright
114.0Bright
124.0Bright
134.0Moderate
144.0Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.8Moderate
223.7Moderate
233.7Moderate
243.7Moderate
253.7Moderate
263.7Moderate
273.7Moderate
283.7Moderate
293.6Moderate
303.6Moderate
313.7Moderate
Planning a trip in May

Hazard calendar for Ascención de Guarayos

In seasonPeak

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

Ascención de Guarayos's rainy season runs October–March, 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 Ascención de Guarayos?

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

6.2
Sightseeing
3rd-best month of the year
6.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Ascención de Guarayos for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ascención de Guarayos in May

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

In May, Ascención de Guarayos sees daytime highs around 27°C and nights near 19°C. Pack light clothes. Worth having: rain gear. About 10 days see rain.

light clothesrain gear

UV index in Ascención de Guarayos in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ascención de Guarayos peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeJan 18UV 15Sep 15UV 7
UV index (midday)Level
Jan16Extreme
Feb14Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep7High
Oct8Very high
Nov13Extreme
Dec14Extreme

Air quality in Ascención de Guarayos 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 Ascención de Guarayos is worst in September — around 154 µg/m³ PM2.5 (very unhealthy), about 24.0× the cleanest month (May, 6 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateSep 16142 µg/m³May 137 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar10Good
Apr7Good
May6Good
Jun8Good
Jul18Moderate
Aug60Unhealthy
Sep154Very unhealthy
Oct64Unhealthy
Nov22Moderate
Dec11Good
Location & terrain

Where is Ascención de Guarayos?

Ascención de Guarayos sits at 15.9°S, 63.2°W, 248 m above sea level, in Bolivia. The nearest listed city is Montero, 161 km away.

MonteroWarnesVilla YapacaníSanta CruzCotocaTrinidadEl TornoSan Ignacio de Velasco

Topography around Ascención de Guarayos

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

Within 3 km, the terrain around Ascención de Guarayos has only modest variations in elevation — a maximum elevation change of 76 m around an average of 220 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 217 m; within 80 km, large variations in elevation — a maximum elevation change of 700 m.

The land around Ascención de Guarayos is covered by grassland (44%) and trees (40%) within 3 km, trees (58%) and grassland (26%) within 16 km, and trees (71%) within 80 km.

3 km
76 m
16 km
217 m
80 km
700 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Montero 161 km · Warnes 181 km · Villa Yapacaní 181 km · Santa Cruz 211 km · Cotoca 214 km · Trinidad 218 km · El Torno 235 km · San Ignacio de Velasco 244 km

Bolivia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 40% of US
price level, 2025
GDP per capita
$5,148
2025
Happiness
5.8 / 10
World Happiness, 2025
Homicide rate
4.4
per 100k, 2023
Road deaths
21.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 521
Religion
Roman Catholic 65%Protestant 20%none 6%other 5%

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 Ascención de Guarayos (-15.893°, -63.1885°, elevation 248 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).