Sidareja weather in May

In May, Sidareja sees average daytime highs of 30°C and overnight lows near 24°C, with 148 mm of rain across 20.6 wet days and about 11.7 hours of daylight. It is the 4th-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 16% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of May to 11 h 36 min by month's end. Set against the rest of the year, May is Sidareja's 4th-clearest and 6th-windiest month. For the whole year in context, see Sidareja's year-round climate.

Daytime high
30°
4th warmest
Overnight low
24°
9th coldest
Rainfall
148 mm
20.6 wet days
Daylight
11 h 42 min
5:51 AM – 5:31 PM
Cloud cover
67%
4th clearest
Wind
6 km/h
6th windiest
Solar energy
4.64 kWh/m²
Travel score
3.9
out of 10

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 Sidareja reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924
312924

How May really feels in Sidareja

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.

Sidareja weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°33228.412.42.8
Feb30° / 24°3032712.22.7
Mar30° / 24°29428.412.12.8
Apr30° / 24°23026.111.83.0
May30° / 24°14820.611.73.9
Jun29° / 23°10316.211.64.8
Jul28° / 22°7112.711.65.9
Aug27° / 22°529.211.86.5
Sep28° / 23°8112.2125.7
Oct29° / 23°17419.212.24.3
Nov29° / 24°28925.912.33.2
Dec29° / 24°31928.312.42.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32971
43070
53070
63268
73268
83268
93268
103367
113466
123565
133763
143763
153961
164159
174159
184258
194456
204456
214555
224654
234753
244753
254654
264753
274753
284654
294654
304555
314555

Chance of precipitation in May

Any precipitation

Sidareja gets around 148 mm of rain over 20.6 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 66% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
180
279
379
478
577
676
775
874
973
1072
1170
1269
1367
1466
1564
1663
1762
1861
1960
2059
2159
2259
2359
2459
2559
2659
2759
2859
2960
3060
3161

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
104357
204357
314455
414455
514455
614554
714554
824652
924652
1024751
1124751
1224850
1324949
1425048
1535047
1635146
1735245
1835344
1935443
2035542
2135641
2235740
2335938
2435938
2536037
2636136
2736136
2836235
2936235
3036334
3136334

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.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 42 min at the start of May to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 5:50 AM to 5:54 AM, and sunset from 5:34 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:505:34
211.75:505:34
311.75:505:34
411.75:505:33
511.75:505:33
611.75:505:33
711.75:505:33
811.75:505:32
911.75:505:32
1011.75:505:32
1111.75:515:32
1211.75:515:31
1311.75:515:31
1411.75:515:31
1511.75:515:31
1611.75:515:31
1711.75:515:31
1811.75:525:31
1911.65:525:31
2011.65:525:30
2111.65:525:30
2211.65:525:30
2311.65:535:30
2411.65:535:30
2511.65:535:30
2611.65:535:30
2711.65:535:30
2811.65:545:30
2911.65:545:30
3011.65:545:30
3111.65:545:30

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.64 kWh/m².

For context, solar energy here swings from a low near 4.37 kWh/m² to a high of 5.16 kWh/m² in September across the year — May's 4.64 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
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in May

Hazard calendar for Sidareja

In seasonPeak

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

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

Sidareja's rainy season runs October–April, when most of the year's rain falls.

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

Is May a good time to visit Sidareja?

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

3.9
Sightseeing
6th-best month of the year
5.2
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Sidareja.

What to pack for Sidareja in May

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

In May, Sidareja sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Sidareja in May

The nearest coast averages about 29°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 44 km away) is warmest in April 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
May29Tropical
Jun28Warm
Jul27Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec29Tropical

UV index in Sidareja in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sidareja peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 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 highExtremeExtremeMar 12UV 15Jun 15UV 7
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun7High
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct13Extreme
Nov9Very high
Dec12Extreme

Air quality in Sidareja 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 Sidareja is worst in May — around 46 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMay 1545 µg/m³Sep 1630 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb39Poor
Mar41Poor
Apr44Poor
May46Poor
Jun43Poor
Jul37Poor
Aug31Moderate
Sep30Moderate
Oct31Moderate
Nov32Moderate
Dec33Moderate
Location & terrain

Where is Sidareja?

Sidareja sits at 7.5°S, 108.8°E, 8 m above sea level, in Indonesia. The nearest listed city is Majenang, 21 km away.

Topography around Sidareja

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

Within 3 km, the terrain around Sidareja has only modest variations in elevation — a maximum elevation change of 77 m around an average of 8 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 437 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,396 m.

The land around Sidareja is covered by cropland (46%) and trees (37%) within 3 km, trees (51%) and cropland (42%) within 16 km, and trees (53%) and water (26%) within 80 km.

3 km
77 m
16 km
437 m
80 km
3,396 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Majenang 21 km · Wangon 29 km · Cilacap 36 km · Purwokerto 49 km · Margasari 50 km · Baturaden 51 km · Ciamis 52 km · Kroya 53 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 Sidareja (-7.4846°, 108.7923°, elevation 8 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).