Barus weather in May

In May, Barus sees average daytime highs of 28°C and overnight lows near 23°C, with 261 mm of rain across 22.2 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 10th-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 4% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of May to 12 h 06 min by month's end. Set against the rest of the year, May is Barus's 6th-clearest and 7th-windiest month. For the whole year in context, see Barus's year-round climate.

Daytime high
28°
1st warmest
Overnight low
23°
12th coldest
Rainfall
261 mm
22.2 wet days
Daylight
12 h 06 min
6:20 AM – 6:25 PM
Cloud cover
87%
6th clearest
Wind
5 km/h
7th windiest
Solar energy
5.17 kWh/m²
Travel score
4.0
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 Barus reaches about 28°C in the afternoon and slips back to 23°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, May runs on par with April and on par with June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12823
22823
32823
42823
52823
62823
72823
82823
92823
102823
112823
122823
132823
142823
152823
162823
172823
182823
192823
202823
212823
222823
232823
242823
252823
262823
272823
282823
292823
302823
312823

Barus weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°34227.211.93.7
Feb28° / 23°31424.811.93.7
Mar28° / 23°36128.6123.4
Apr28° / 23°38227.6123.5
May28° / 23°26122.212.14.0
Jun28° / 23°16417.612.14.6
Jul28° / 23°19619.712.14.7
Aug27° / 23°28522.912.14.3
Sep27° / 23°30223.9124.0
Oct27° / 23°41926123.8
Nov27° / 23°52128.311.93.4
Dec27° / 23°43928.411.93.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 7% of May, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3694
4793
5793
6793
7793
8892
9991
101090
111090
121189
131189
141288
151288
161288
171387
181387
191387
201387
211387
221387
231387
241288
251288
261288
271189
281189
291189
301189
311288

Chance of precipitation in May

Any precipitation

Barus gets around 261 mm of rain over 22.2 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 71% and peaks near 84% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
184
283
382
481
580
679
778
877
976
1074
1173
1271
1370
1469
1568
1667
1766
1866
1966
2066
2166
2266
2366
2466
2567
2667
2768
2868
2969
3069
3168

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 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
13970
24960
34960
44960
54960
65950
75950
86940
96940
107930
117930
128920
138911
148911
158911
168911
178911
188911
198911
208911
218911
228911
238911
248911
258911
268920
278920
288920
298920
309910
319910

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 12 h 06 min at the start of May to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over May. Sunrise moves from 6:22 AM to 6:21 AM, and sunset from 6:26 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:226:26
212.16:216:26
312.16:216:26
412.16:216:25
512.16:216:25
612.16:216:25
712.16:216:25
812.16:206:25
912.16:206:25
1012.16:206:25
1112.16:206:25
1212.16:206:25
1312.16:206:25
1412.16:206:25
1512.16:206:25
1612.16:206:25
1712.16:206:25
1812.16:206:25
1912.16:206:26
2012.16:206:26
2112.16:206:26
2212.16:206:26
2312.16:206:26
2412.16:206:26
2512.16:206:26
2612.16:206:26
2712.16:206:26
2812.16:206:27
2912.16:206:27
3012.16:206:27
3112.16:216:27

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.17 kWh/m².

For context, solar energy here swings from a low near 4.18 kWh/m² to a high of 5.53 kWh/m² in February across the year — May's 5.17 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in May

Hazard calendar for Barus

In seasonPeak

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

Barus sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

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

Is May a good time to visit Barus?

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

4.0
Sightseeing
4th-best month of the year
4.7
Beach & pool
3rd-best month of the year

May is a reasonable time to visit Barus for sightseeing.

What to pack for Barus in May

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

In May, Barus sees daytime highs around 28°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Barus in May

The nearest coast averages about 30°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 15 km away) is warmest in March at about 30°C and coldest in November near 29°C.

The water stays above 20°C all year — warm enough for a swim any month.

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb30Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Barus 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 Barus peaks around February 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 20UV 14Jun 20UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep14Extreme
Oct14Extreme
Nov12Extreme
Dec12Extreme

Air quality in Barus 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 Barus is worst in February — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodFeb 2017 µg/m³Nov 2312 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May14Moderate
Jun15Moderate
Jul15Moderate
Aug15Moderate
Sep16Moderate
Oct17Moderate
Nov12Good
Dec12Good
Location & terrain

Where is Barus?

Barus sits at 2.0°N, 98.4°E, 5 m above sea level, in Indonesia. The nearest listed city is Sibolga, 52 km away.

Topography around Barus

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

Within 3 km, the terrain around Barus has only modest variations in elevation — a maximum elevation change of 37 m around an average of 5 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,089 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,119 m.

The land around Barus is covered by water (48%), trees (25%) and cropland (20%) within 3 km, trees (48%) and water (48%) within 16 km, and trees (46%) and water (46%) within 80 km.

3 km
37 m
16 km
1,089 m
80 km
2,119 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Sibolga 52 km · Tarutung 63 km · Pangururan 74 km · Singkil 74 km · Sidikalang 83 km · Subulussalam 92 km · Paropo 96 km · Tongging 100 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

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 Barus (2.0106°, 98.3982°, elevation 5 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. 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).