Viacha weather in May

In May, Viacha sees average daytime highs of 16°C and overnight lows near 0°C, with 14 mm of precipitation across 4.8 wet days and about 11.2 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 16°C through the month. The sky is clear or mostly clear about 55% of the time in May, and the air most often feels dry.

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 Viacha's 4th-clearest and 8th-windiest month. For the whole year in context, see Viacha's year-round climate.

Daytime high: 16°; 5th warmest
Overnight low: 0°; 4th coldest
Precipitation: 14 mm; 4.8 wet days
Daylight: 11 h 12 min; 6:53 AM – 6:06 PM
Cloud cover: 39%; 4th clearest
Wind: 6 km/h; 8th windiest
Solar energy: 5.85 kWh/m²
Travel score: 5.7; out of 10

Viacha is city in Bolivia.

Density: 18,344/km²; people per km²

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

← April Viacha 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

Day-to-day highs hold fairly steady near 16°C through the month.

A typical May day in Viacha reaches about 16°C in the afternoon and slips back to 0°C overnight — a 16°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 17°C. Set against its neighbours, May runs on par with April and on par with 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)	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	15	15
Avg low (°C)	2	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	-1	-1	-1	-1	-1	-1	-1	-1	-1	-1

	Avg high (°C)	Avg low (°C)
1	16	2
2	16	1
3	16	1
4	16	1
5	16	1
6	16	1
7	16	1
8	16	1
9	16	1
10	16	1
11	16	1
12	16	0
13	16	0
14	16	0
15	16	0
16	16	0
17	16	0
18	16	0
19	16	0
20	16	0
21	16	0
22	16	-1
23	16	-1
24	16	-1
25	16	-1
26	16	-1
27	16	-1
28	16	-1
29	16	-1
30	15	-1
31	15	-1

How May really feels in Viacha

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 31 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 May is cold — wind chill drags the overnight "feels like" below the raw low.

Viacha weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	15° / 5°	143	24.8	0.6	12.9	2.7
Feb	15° / 5°	124	22.6	0.4	12.6	2.7
Mar	15° / 4°	96	22.4	0.1	12.1	3.1
Apr	15° / 3°	46	13.6	0.1	11.6	4.2
May	16° / 0°	14	4.8	0.1	11.2	5.7
Jun	15° / -2°	8	2.5	0.3	11	5.7
Jul	15° / -2°	11	3	0.9	11.1	5.6
Aug	16° / -1°	17	4.5	0.9	11.4	5.7
Sep	16° / 1°	32	9.6	0.6	11.9	5.4
Oct	17° / 3°	53	13.3	0.5	12.4	5.0
Nov	17° / 4°	58	13.9	0.1	12.8	4.8
Dec	16° / 5°	110	20.9	0.5	13	3.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up 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 (%)	65	66	67	69	69	70	72	72	73	73	73	73	73	73	73	73	74	74	74	74	74	74	75	75	75	76	75	76	76	76	77
Cloudier (%)	35	34	33	31	31	30	28	28	27	27	27	27	27	27	27	27	26	26	26	26	26	26	25	25	25	24	25	24	24	24	23

	Clearer (%)	Cloudier (%)
1	65	35
2	66	34
3	67	33
4	69	31
5	69	31
6	70	30
7	72	28
8	72	28
9	73	27
10	73	27
11	73	27
12	73	27
13	73	27
14	73	27
15	73	27
16	73	27
17	74	26
18	74	26
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	75	25
25	75	25
26	76	24
27	75	25
28	76	24
29	76	24
30	76	24
31	77	23

Chance of precipitation in May

Any precipitation

Viacha gets around 14 mm of rain and snow over 4.8 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 16% and peaks near 28% on the wettest days, and about 0 day brings snow. 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 (%)	28	27	26	25	24	24	23	22	21	20	19	19	18	17	16	15	14	13	13	12	11	11	10	10	9	9	9	9	9	9	9

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

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 6 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 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)	5	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
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	5	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm
31	6	calm

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 6:48 AM to 6:58 AM, and sunset from 6:13 PM to 6:03 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)	11.4	11.4	11.4	11.4	11.4	11.3	11.3	11.3	11.3	11.3	11.3	11.3	11.3	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.1	11.1	11.1	11.1	11.1	11.1	11.1	11.1
Sunrise (AM)	6:48	6:48	6:49	6:49	6:49	6:50	6:50	6:50	6:50	6:51	6:51	6:51	6:52	6:52	6:52	6:53	6:53	6:53	6:54	6:54	6:54	6:55	6:55	6:55	6:56	6:56	6:57	6:57	6:57	6:58	6:58
Sunset (PM)	6:13	6:12	6:12	6:11	6:11	6:10	6:10	6:09	6:09	6:08	6:08	6:08	6:07	6:07	6:06	6:06	6:06	6:06	6:05	6:05	6:05	6:05	6:04	6:04	6:04	6:04	6:04	6:04	6:03	6:03	6:03

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.4	6:48	6:13
2	11.4	6:48	6:12
3	11.4	6:49	6:12
4	11.4	6:49	6:11
5	11.4	6:49	6:11
6	11.3	6:50	6:10
7	11.3	6:50	6:10
8	11.3	6:50	6:09
9	11.3	6:50	6:09
10	11.3	6:51	6:08
11	11.3	6:51	6:08
12	11.3	6:51	6:08
13	11.3	6:52	6:07
14	11.2	6:52	6:07
15	11.2	6:52	6:06
16	11.2	6:53	6:06
17	11.2	6:53	6:06
18	11.2	6:53	6:06
19	11.2	6:54	6:05
20	11.2	6:54	6:05
21	11.2	6:54	6:05
22	11.2	6:55	6:05
23	11.2	6:55	6:04
24	11.1	6:55	6:04
25	11.1	6:56	6:04
26	11.1	6:56	6:04
27	11.1	6:57	6:04
28	11.1	6:57	6:04
29	11.1	6:57	6:03
30	11.1	6:58	6:03
31	11.1	6:58	6:03

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.85 kWh/m².

For context, solar energy here swings from a low near 5.44 kWh/m² to a high of 7.44 kWh/m² in November across the year — May's 5.85 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)	6.0	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.7	5.7	5.7	5.7	5.7	5.7
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	Bright	Bright	Bright	Bright

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

Planning a trip in May

Hazard calendar for Viacha

In seasonPeak

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

Viacha's rainy season runs December–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 Viacha?

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

5.7

Sightseeing

1st-best month of the year

—

Beach & pool

never really warm enough

May is a reasonable time to visit Viacha for sightseeing.

What to pack for Viacha in May

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

In May, Viacha sees daytime highs around 16°C and nights near 0°C. Worth packing: a warm layer and sun protection. About 5 days see rain.

a warm layersun protection

UV index in Viacha in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Viacha peaks around February 8 at about 19 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 9 at about 9 (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)	19	19	17	14	11	9	9	13	15	17	17	18
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	19	Extreme
Feb	19	Extreme
Mar	17	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	9	Very high
Jul	9	Very high
Aug	13	Extreme
Sep	15	Extreme
Oct	17	Extreme
Nov	17	Extreme
Dec	18	Extreme

Location & terrain

Where is Viacha?

Viacha sits at 16.6°S, 68.3°W, 3,870 m above sea level, in Bolivia. The nearest listed city is Laja, 16 km away.

Topography around Viacha

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

Within 3 km, the terrain around Viacha has only modest variations in elevation — a maximum elevation change of 115 m around an average of 3,856 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 360 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,498 m.

The land around Viacha is covered by cropland (45%) and grassland (36%) within 3 km, grassland (43%) and cropland (43%) within 16 km, and grassland (65%) within 80 km.

3 km

115 m

cropland 45%

16 km

360 m

grassland 43%

80 km

5,498 m

grassland 65%

treesgrasslandcroplandartificial surfacesbare terrainsnow and icewaterwetland

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

May weather nearby: Laja 16 km · Achocalla 18 km · La Paz 23 km · Tiahuanaco 42 km · Copacabana 99 km · Sorata 104 km · Isla del Sol 113 km · Caranavi 120 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

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 Viacha (-16.65°, -68.3°, elevation 3,870 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	16	2
2	16	1
3	16	1
4	16	1
5	16	1
6	16	1
7	16	1
8	16	1
9	16	1
10	16	1
11	16	1
12	16	0
13	16	0
14	16	0
15	16	0
16	16	0
17	16	0
18	16	0
19	16	0
20	16	0
21	16	0
22	16	-1
23	16	-1
24	16	-1
25	16	-1
26	16	-1
27	16	-1
28	16	-1
29	16	-1
30	15	-1
31	15	-1

	Clearer (%)	Cloudier (%)
1	65	35
2	66	34
3	67	33
4	69	31
5	69	31
6	70	30
7	72	28
8	72	28
9	73	27
10	73	27
11	73	27
12	73	27
13	73	27
14	73	27
15	73	27
16	73	27
17	74	26
18	74	26
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	75	25
25	75	25
26	76	24
27	75	25
28	76	24
29	76	24
30	76	24
31	77	23

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

	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	16	2
2	16	1
3	16	1
4	16	1
5	16	1
6	16	1
7	16	1
8	16	1
9	16	1
10	16	1
11	16	1
12	16	0
13	16	0
14	16	0
15	16	0
16	16	0
17	16	0
18	16	0
19	16	0
20	16	0
21	16	0
22	16	-1
23	16	-1
24	16	-1
25	16	-1
26	16	-1
27	16	-1
28	16	-1
29	16	-1
30	15	-1
31	15	-1

	Clearer (%)	Cloudier (%)
1	65	35
2	66	34
3	67	33
4	69	31
5	69	31
6	70	30
7	72	28
8	72	28
9	73	27
10	73	27
11	73	27
12	73	27
13	73	27
14	73	27
15	73	27
16	73	27
17	74	26
18	74	26
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	75	25
25	75	25
26	76	24
27	75	25
28	76	24
29	76	24
30	76	24
31	77	23

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

	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	16	2
2	16	1
3	16	1
4	16	1
5	16	1
6	16	1
7	16	1
8	16	1
9	16	1
10	16	1
11	16	1
12	16	0
13	16	0
14	16	0
15	16	0
16	16	0
17	16	0
18	16	0
19	16	0
20	16	0
21	16	0
22	16	-1
23	16	-1
24	16	-1
25	16	-1
26	16	-1
27	16	-1
28	16	-1
29	16	-1
30	15	-1
31	15	-1

	Clearer (%)	Cloudier (%)
1	65	35
2	66	34
3	67	33
4	69	31
5	69	31
6	70	30
7	72	28
8	72	28
9	73	27
10	73	27
11	73	27
12	73	27
13	73	27
14	73	27
15	73	27
16	73	27
17	74	26
18	74	26
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	75	25
25	75	25
26	76	24
27	75	25
28	76	24
29	76	24
30	76	24
31	77	23

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

	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