Ruteng weather in May

In May, Ruteng sees average daytime highs of 28°C and overnight lows near 19°C, with 120 mm of rain across 16.3 wet days and about 11.6 hours of daylight. It is the 5th-warmest and 8th-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 14% of the time in May, and the air most often feels muggy.

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 Ruteng's 6th-clearest and 10th-windiest month. For the whole year in context, see Ruteng's year-round climate.

Daytime high
28°
5th warmest
Overnight low
19°
5th coldest
Rainfall
120 mm
16.3 wet days
Daylight
11 h 36 min
6:06 AM – 5:43 PM
Cloud cover
66%
6th clearest
Wind
3 km/h
10th windiest
Solar energy
5.3 kWh/m²
Travel score
5.2
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 Ruteng reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°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.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52820
62820
72820
82820
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232819
242819
252819
262819
272819
282819
292819
302819
312819

Ruteng weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 21°4333012.43.3
Feb27° / 21°43327.312.33.3
Mar27° / 20°39828.212.13.6
Apr28° / 20°27723.611.84.1
May28° / 19°12016.311.65.2
Jun28° / 19°619.811.56.2
Jul28° / 18°407.211.56.5
Aug29° / 18°234.511.76.2
Sep30° / 19°446.111.95.5
Oct30° / 20°12913.912.24.6
Nov29° / 20°30623.812.43.6
Dec28° / 21°4252912.53.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 26% of May, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33565
43466
53466
63466
73466
83565
93664
103763
113763
123961
134060
144159
154159
164258
174456
184456
194555
204555
214555
224555
234456
244456
254456
264357
274258
284258
294159
304159
314060

Chance of precipitation in May

Any precipitation

Ruteng gets around 120 mm of rain over 16.3 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 52% and peaks near 58% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
158
257
357
456
556
655
755
855
954
1054
1153
1253
1353
1452
1552
1652
1751
1851
1951
2051
2151
2250
2350
2450
2549
2649
2748
2847
2946
3045
3144

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 66% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1046927
2046927
3056827
4056827
5066727
6066727
7076627
8076726
9086626
10086626
11096625
12096625
130106624
140106624
150116623
161116523
171126522
181136422
191136521
201146421
211146421
221156420
231156420
241166419
251166419
261166518
271176517
281176517
291176616
301176715
311176814

Wind in May

Winds average 3 km/h in May.

Across May, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

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 6:04 AM to 6:09 AM, and sunset from 5:46 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:045:46
211.76:045:46
311.76:045:46
411.76:055:45
511.76:055:45
611.76:055:45
711.76:055:45
811.76:055:44
911.66:055:44
1011.66:055:44
1111.66:055:44
1211.66:065:43
1311.66:065:43
1411.66:065:43
1511.66:065:43
1611.66:065:43
1711.66:065:42
1811.66:075:42
1911.66:075:42
2011.66:075:42
2111.66:075:42
2211.66:075:42
2311.66:085:42
2411.66:085:42
2511.66:085:42
2611.66:085:42
2711.66:085:42
2811.66:095:42
2911.56:095:42
3011.56:095:42
3111.56:095:42

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.3 kWh/m².

For context, solar energy here swings from a low near 5 kWh/m² to a high of 6.78 kWh/m² in October across the year — May's 5.3 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in May

Hazard calendar for Ruteng

In seasonPeak

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

Ruteng sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Ruteng's monsoon runs November–April, when most of the year's rain falls.

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

Is May a good time to visit Ruteng?

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

5.2
Sightseeing
5th-best month of the year
5.8
Beach & pool
6th-best month of the year

May is a reasonable time to visit Ruteng for sightseeing.

What to pack for Ruteng in May

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

In May, Ruteng sees daytime highs around 28°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Ruteng in May

The nearest coast averages about 28°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 31 km away) is warmest in March at about 29°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug26Warm
Sep27Warm
Oct28Warm
Nov29Tropical
Dec29Tropical

UV index in Ruteng 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 Ruteng peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 10UV 15Jul 10UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug13Extreme
Sep14Extreme
Oct13Extreme
Nov12Extreme
Dec13Extreme

Air quality in Ruteng 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 Ruteng is worst in October — around 15 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (February, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1715 µg/m³Feb 199 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb9Good
Mar10Good
Apr10Good
May10Good
Jun12Good
Jul11Good
Aug10Good
Sep13Moderate
Oct15Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Ruteng?

Ruteng sits at 8.6°S, 120.5°E, 1,173 m above sea level, in Indonesia. The nearest listed city is Labuan Bajo, 65 km away.

Lewoleba

Topography around Ruteng

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

Within 3 km, the terrain around Ruteng has large variations in elevation — a maximum elevation change of 1,068 m around an average of 1,217 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,215 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,328 m.

The land around Ruteng is covered by trees (63%) within 3 km, trees (89%) within 16 km, and water (56%) and trees (39%) within 80 km.

3 km
1,068 m
16 km
2,215 m
80 km
2,328 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Labuan Bajo 65 km · Waingapu 118 km · Ende 134 km · Tambolaka 162 km · Bima 192 km · Maumere 192 km · Dompu 220 km · Lewoleba 326 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 Ruteng (-8.6114°, 120.4644°, elevation 1,173 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).