Gunungsitoli weather in May

In May, Gunungsitoli sees average daytime highs of 30°C and overnight lows near 25°C, with 285 mm of rain across 25.4 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 3% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of May to 12 h 06 min by month's end. Set against the rest of the year, May is Gunungsitoli's 5th-clearest and 7th-windiest month. For the whole year in context, see Gunungsitoli's year-round climate.

Daytime high
30°
1st warmest
Overnight low
25°
12th coldest
Rainfall
285 mm
25.4 wet days
Daylight
12 h 06 min
6:24 AM – 6:28 PM
Cloud cover
86%
5th clearest
Wind
5 km/h
7th windiest
Solar energy
4.84 kWh/m²
Travel score
3.0
out of 10

Gunungsitoli is city in North Sumatra Province, Indonesia.

Density
487/km²
people per km²
Founded
2008

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Gunungsitoli reaches about 30°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 31°C. Set against its neighbours, May runs on par with April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
113025
123025
133025
143025
153025
163025
173025
183025
193025
203025
213025
223025
233025
243025
253025
263025
273025
283025
293025
303025
313025

How May really feels in Gunungsitoli

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Gunungsitoli weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 25°2832611.93.1
Feb30° / 25°23523123.1
Mar30° / 25°31228.3122.7
Apr30° / 25°36028.2122.7
May30° / 25°28525.412.13.0
Jun30° / 25°23322.312.13.4
Jul30° / 25°26824.412.13.3
Aug29° / 25°33327123.1
Sep29° / 25°35227.3123.0
Oct29° / 25°47128.8123.0
Nov29° / 25°51128.711.92.9
Dec29° / 25°39928.411.93.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% 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 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5793
6793
7892
8892
9892
10892
11991
12991
131090
141189
151189
161189
171288
181288
191288
201288
211288
221387
231387
241387
251387
261387
271387
281387
291387
301387
311387

Chance of precipitation in May

Any precipitation

Gunungsitoli gets around 285 mm of rain over 25.4 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 82% and peaks near 90% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
290
390
489
589
689
788
887
987
1086
1185
1283
1382
1481
1581
1680
1779
1878
1978
2077
2177
2277
2377
2477
2577
2678
2778
2878
2979
3079
3178

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1496
2496
3496
4496
5496
6595
7595
8595
9694
10694
11694
12694
13694
14694
15694
16694
17694
18694
19694
20694
21694
22694
23694
24694
25694
26793
27793
28793
29892
30892
31892

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 hours 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 6 minutes over May. Sunrise moves from 6:25 AM to 6:25 AM, and sunset from 6:28 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:256:28
212.06:256:28
312.06:256:28
412.06:256:28
512.06:256:28
612.06:256:28
712.16:256:28
812.16:246:28
912.16:246:28
1012.16:246:27
1112.16:246:27
1212.16:246:27
1312.16:246:27
1412.16:246:27
1512.16:246:28
1612.16:246:28
1712.16:246:28
1812.16:246:28
1912.16:246:28
2012.16:246:28
2112.16:246:28
2212.16:246:28
2312.16:246:28
2412.16:246:28
2512.16:246:28
2612.16:246:28
2712.16:246:28
2812.16:256:29
2912.16:256:29
3012.16:256:29
3112.16:256:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.84 kWh/m².

For context, solar energy here swings from a low near 3.92 kWh/m² to a high of 5.31 kWh/m² in February across the year — May's 4.84 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.8Bright
Planning a trip in May

Is May a good time to visit Gunungsitoli?

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

3.0
Sightseeing
6th-best month of the year
4.2
Beach & pool
4th-best month of the year

May is a weaker month for outdoor sightseeing in Gunungsitoli.

What to pack for Gunungsitoli in May

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

In May, Gunungsitoli sees daytime highs around 30°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Gunungsitoli 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 offshore is warmest in May 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
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Gunungsitoli in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gunungsitoli peaks around February 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 14Jul 11UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Gunungsitoli?

Gunungsitoli sits at 1.3°N, 97.6°E, 14 m above sea level, in Indonesia. The nearest listed city is Lahewa, 51 km away.

Topography around Gunungsitoli

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

Within 3 km, the terrain around Gunungsitoli has only modest variations in elevation — a maximum elevation change of 223 m around an average of 42 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 367 m; within 80 km, large variations in elevation — a maximum elevation change of 834 m.

The land around Gunungsitoli is covered by trees (51%) and water (37%) within 3 km, trees (50%) and water (48%) within 16 km, and water (79%) and trees (21%) within 80 km.

3 km
223 m
16 km
367 m
80 km
834 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Lahewa 51 km · Teluk Dalam 82 km · Singkil 113 km · Barus 118 km · Sibolga 139 km · Subulussalam 156 km · Tarutung 170 km · Sidikalang 180 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 Gunungsitoli (1.2888°, 97.6143°, elevation 14 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. 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).