Calulo weather in May

In May, Calulo sees average daytime highs of 28°C and overnight lows near 18°C, with 37 mm of rain across 7 wet days and about 11.5 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 54% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 42 min at the start of May to 11 h 30 min by month's end. Set against the rest of the year, May is Calulo's 4th-clearest and 8th-windiest month. For the whole year in context, see Calulo's year-round climate.

Daytime high
28°
1st warmest
Overnight low
18°
7th coldest
Rainfall
37 mm
7 wet days
Daylight
11 h 30 min
6:10 AM – 5:43 PM
Cloud cover
41%
4th clearest
Wind
5 km/h
8th windiest
Solar energy
5.42 kWh/m²
Travel score
6.6
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical May day in Calulo reaches about 28°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, May runs on par with April and on par with June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12819
22819
32819
42819
52819
62819
72819
82818
92818
102818
112818
122818
132818
142818
152818
162818
172818
182818
192818
202817
212817
222817
232817
242817
252817
262817
272817
282817
292817
302817
312816

Calulo weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°11716.312.55.4
Feb27° / 18°1201512.35.2
Mar27° / 18°24523.412.14.3
Apr28° / 19°23723.711.84.2
May28° / 18°37711.56.6
Jun28° / 15°20.411.48.6
Jul28° / 14°0011.58.7
Aug27° / 14°51.311.78.4
Sep27° / 16°4010.311.96.6
Oct26° / 18°14322.612.24.6
Nov26° / 18°25626.412.53.9
Dec25° / 18°17521.312.64.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24456
34753
45149
55446
65644
75842
86139
96436
106634
116931
127129
137327
147426
157624
167723
177822
187921
198020
208020
218119
228119
238119
248218
258218
268317
278317
288416
298515
308515
318713

Chance of precipitation in May

Any precipitation

Calulo gets around 37 mm of rain over 7 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 23% and peaks near 52% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
152
249
346
444
541
639
737
835
933
1031
1129
1227
1325
1423
1521
1620
1718
1817
1915
2014
2113
2213
2312
2411
2510
2610
279
288
298
307
317

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 46% of days. Sticky, muggy-or-worse air turns up on roughly 34% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10521731
20523711
30625681
40727651
51729630
61831600
71933570
811035540
921037510
1021138480
1131240450
1231341420
1331443390
1441545370
1541646340
1641648310
1741750290
1841852260
1941854240
2041955220
2152055200
2252057180
2352158160
2452259140
2552360120
2652460110
275256190
286266080
297275970
308295760
319315550

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 5 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 42 min at the start of May to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over May. Sunrise moves from 6:08 AM to 6:14 AM, and sunset from 5:47 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:085:47
211.66:085:47
311.66:085:46
411.66:085:46
511.66:095:46
611.66:095:45
711.66:095:45
811.66:095:45
911.66:095:45
1011.66:095:44
1111.66:095:44
1211.66:105:44
1311.66:105:44
1411.66:105:43
1511.56:105:43
1611.56:105:43
1711.56:115:43
1811.56:115:43
1911.56:115:42
2011.56:115:42
2111.56:115:42
2211.56:125:42
2311.56:125:42
2411.56:125:42
2511.56:125:42
2611.56:135:42
2711.56:135:42
2811.56:135:42
2911.56:135:42
3011.56:145:42
3111.56:145:42

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.42 kWh/m².

For context, solar energy here swings from a low near 4.93 kWh/m² to a high of 5.81 kWh/m² in February across the year — May's 5.42 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Hazard calendar for Calulo

In seasonPeak

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

Calulo's rainy season runs October–April, 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 Calulo?

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

6.6
Sightseeing
4th-best month of the year
7.6
Beach & pool
4th-best month of the year

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

What to pack for Calulo in May

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

In May, Calulo sees daytime highs around 28°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Calulo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Calulo peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 16 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 14UV 15Aug 16UV 7
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar16Extreme
Apr13Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug7Very high
Sep8Very high
Oct12Extreme
Nov13Extreme
Dec13Extreme

Air quality in Calulo 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 Calulo is worst in July — around 171 µg/m³ PM2.5 (very unhealthy), about 13.1× the cleanest month (December, 13 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyVery unhealthyUnhealthyModerateJul 12166 µg/m³Dec 1413 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb15Moderate
Mar14Moderate
Apr14Moderate
May27Moderate
Jun146Unhealthy
Jul171Very unhealthy
Aug69Unhealthy
Sep67Unhealthy
Oct35Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Calulo?

Calulo sits at 10.0°S, 14.9°E, 995 m above sea level, in Angola. The nearest listed city is Dondo, 62 km away.

LucalaGolungo AltoGabelaCacuso

Topography around Calulo

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

Within 3 km, the terrain around Calulo has significant variations in elevation — a maximum elevation change of 254 m around an average of 987 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,080 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,972 m.

The land around Calulo is covered by grassland (61%) within 3 km, grassland (44%), trees (31%) and shrubs (23%) within 16 km, and grassland (56%) and trees (31%) within 80 km.

3 km
254 m
16 km
1,080 m
80 km
1,972 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Dondo 62 km · Santa Clara 63 km · N'dalatando 78 km · Quibala 82 km · Lucala 90 km · Golungo Alto 97 km · Gabela 110 km · Cacuso 113 km

Angola travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$3,129
2025
Happiness
3.8 / 10
World Happiness, 2017
Homicide rate
4.1
per 100k, 2016
Road deaths
26.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 413
Religion
Roman Catholic 41%Protestant 38%none 12%other 9%

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 Calulo (-10.0006°, 14.8952°, elevation 995 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).