Kertosari i
Coastal town · East Java

Kertosari

Kabupaten Situbondo · Indonesia

Now
29°
Sea temperature
30°
Local time
06:00 PM
Population
—
Elevation
47 m
Best time to go
Jun–Aug
Go score 100/100
Sea temperature
30°
November
Main airport
WADE
62 km
Time zone
UTC+7
Asia/Jakarta
At a glance

Kertosari lies in East Java, Indonesia. By our climate data, the best time to visit is June–August. The warmest month is October, with average highs of 32°C (90°F); the sea is warmest in November at about 30°C (86°F).

The best months to visit are June–August.

The sea is warmest in November, at about 30°C (86°F).

Swimming season (water ≥ 21 °C): January–December.

October is the hottest month, with highs around 32°C (90°F).

July is the coldest month, with lows around 21°C (70°F).

The wettest month is January, with rain on about 19 days.

September is the sunniest month, with about 10.5 hours of sunshine a day.

In October, it’s warmer here than in 73% of places in Indonesia.

Weather

16-day forecast

Kertosari weather forecast
29°
Overcast
Feels like
32°
Humidity
65%
Wind
9 km/h E
Gusts
25 km/h
Cloud cover
100%
Pressure
1010 hPa
UV index
0 (now)
Sunrise / Sunset
04:57 / 17:17

Next 48 hours

29° 18 27° 21 26° 00 25° 03 28° 06 31° 09 32° 12 30° 15 29° 18 28° 21 27° 00 25° 03 28° 06 30° 09 30° 12 29° 15
Today
Oct 25
Overcast
33°24°
0% 19 E
Tomorrow
Oct 26
Overcast
32°25°
6% 19 E
Tue
Oct 27
Light drizzle
30°25°
19% 1.6 mm 18 NE
Wed
Oct 28
Overcast
32°25°
35% 22 E
Thu
Oct 29
Light drizzle
33°25°
69% 3.1 mm 21 E
Fri
Oct 30
Light drizzle
33°25°
39% 20 E
Sat
Oct 31
Light drizzle
32°25°
43% 1.0 mm 18 E
Sun
Nov 1
Light drizzle
31°26°
30% 1.6 mm 16 NE
Mon
Nov 2
Light drizzle
33°26°
43% 1.2 mm 20 E
Tue
Nov 3
Clear sky
32°25°
26% 22 E
Wed
Nov 4
Light drizzle
32°26°
12% 1.0 mm 21 E
Thu
Nov 5
Light drizzle
30°26°
23% 0.8 mm 15 NE
Fri
Nov 6
Light drizzle
31°26°
31% 1.4 mm 16 E
Sat
Nov 7
Partly cloudy
32°26°
28% 18 E
Sun
Nov 8
Clear sky
32°26°
24% 0.4 mm 13 E
Mon
Nov 9
Mainly clear
35°24°
45% 15 E
European AQI39Fair
PM2.514.3
PM1016.8
NO₂5.8
O₃45
Pollen

Pollen forecasts are only available in Europe.

Updated: About this data: Forecasts & outlooks

Climate

Best time to visit Kertosari

Average conditions for each month, from long-term climate normals (1961–2020).

Best time to goJune–August
15°20°25°30°35° 0125250 mm Jan · 239 mmFeb · 194 mmMar · 180 mmApr · 90 mmMay · 88 mmJun · 16 mmJul · 8 mmAug · 2 mmSep · 2 mmOct · 19 mmNov · 67 mmDec · 188 mm 30°30°30°31°31°31°31°31°32°32°32°30° 22°22°22°22°22°22°21°21°22°23°23°23° JanFebMarAprMayJunJulAugSepOctNovDec
Average high Average low Sea temperature Rainfall (mm) Best time to go

Month by month

ClimateJanFebMarAprMayJunJulAugSepOctNovDec
Average high30°30°30°31°31°31°31°31°32°32°32°30°
Average low22°22°22°22°22°22°21°21°22°23°23°23°
Sea temperature29°29°29°30°30°29°28°28°28°29°30°30°
Rainfall (mm)2391941809088168221967188
Rain days19181611742112615
Sunshine per day (h)6.77.17.78.99910.110.410.510.48.47.1
Daylight (h)12.512.412.211.911.811.711.711.912.112.312.512.6
Humidity (%)828383818178767575757781
Wind (km/h)141311101214141514121112
Go score69707587939610010093918875

The go score (0–100) favours daytime highs of 22–27 °C, mild nights, plenty of sunshine and few rainy days.

Download climate data (CSV)

Climate normals: WorldClim 2.1 (1970–2000) · CRU CL 2.0 (1961–1990) About this data: Climate normals

Activities

What to do in Kertosari, month by month

When each activity is at its best, judged from the climate averages.

Rainy season: December–March Dry season: April–November (Based on average monthly rainfall)

What to do in Kertosari, month by month
ActivitiesJanFebMarAprMayJunJulAugSepOctNovDec
Beach & swimming PoorPoorPoorPoorFairGoodGoodGoodGoodGoodGoodPoor
Sightseeing & city walks PoorPoorPoorFairFairFairFairFairFairFairFairPoor
Diving & snorkelling PoorPoorPoorFairGoodGoodGoodGoodGoodGoodGoodPoor
Photography & sunsets FairFairFairFairGoodGoodGoodGoodGoodGoodGoodFair

Good Fair Poor · Estimated from long-term averages of temperature, rain days, sunshine and sea temperature.

How each activity is rated
  • Beach & swimming — Good: sea ≥ 24 °C, highs ≥ 26 °C and at most 6 rain days (or under 40 mm of rain in the month). Fair: sea ≥ 21 °C, highs ≥ 23 °C and at most 10 rain days (or under 80 mm).
  • Sightseeing & city walks — Good: highs of 15–27 °C and few rain days. Fair: 11–33 °C.
  • Diving & snorkelling — Good: sea ≥ 25 °C in a dry spell. Fair: ≥ 22 °C, or ≥ 20 °C near known dive sites.
  • Photography & sunsets — Good: at least 7 hours of sunshine a day and few rain days. Fair: 5 hours or more.

Rainy season in Indonesia: October–May · Wettest month: January Month by month

Sea

Kertosari: sea water temperature

Water temperature details
Water temperature today
30°C (86°F)
How it feels: very warm

Wave height: 0.3 m

Swimming season

January–December

Sun30°
Mon30°
Tue30°
Wed30°
Thu30°
Fri30°
Sat30°

Average sea temperature by month

29° Jan 29° Feb 29° Mar 30° Apr 30° May 29° Jun 28° Jul 28° Aug 28° Sep 29° Oct 30° Nov 30° Dec

About this data: Sea temperature

Nearby beaches & coastal towns

Landmarks nearby

Mountains, castles, museums, beaches and heritage sites within 25 km.

Things to do in Kertosari
Practical

Kertosari: practical information

Plugs, money, emergency numbers, safety and typical prices: what to know before you go.

Power plugs
CF
Voltage
127 V · 50 Hz
Driving
Drive on the left
Currency

Indonesian Rupiah

IDR · Rp

1 USD ≈ 18,107.8 IDR

Languages
Indonesian
Calling code
+62
Emergency numbers
Safety & travel advice
2
Exercise increased cautionUS travel advisory
No travel warningsUK travel advice · Sep 18, 2026
Read the full advice
Typical prices
  • Meal, casual restaurantIDR 137,650≈ $7.60
  • CappuccinoIDR 37,350≈ $2.10
  • Beer (0.5 l)IDR 52,800≈ $2.90
  • Bottled water (1.5 l)IDR 17,450≈ $1.00
  • Taxi, 5 kmIDR 94,350≈ $5.20
  • Public transport ticketIDR 18,150≈ $1.00
  • Mid-range hotel, per nightIDR 1,307,200≈ $72.00

Estimated from Indonesia’s consumer price level — real prices vary by place and season. Prices are about 31% of US levels.

Upcoming public holidays
  • Dec 25Christmas Day
  • Jan 1New Year's Day
Sun & daylight
Sunrise
04:57
Sunset
17:17
Daylight today
12.3 h
Local time in Kertosari
Earthquake history

13 earthquakes of magnitude 5 or more within 100 km in the last 51 years.

Strongest: M6.5 (1976).

Map

How to get to Kertosari

Nearest airports

  • WADELieutenant Colonel Wisnu AirfieldGerokgak, Buleleng62 km
  • BWXBanyuwangi AirportRogojampi, Banyuwangi64 km
  • JBBNotohadinegoro AirportJember78 km

Distances

estimate

Hotels

Hotels in Kertosari

Hotels and holiday rentals with live nightly prices.

Hotels in Kertosari
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Climate in Kertosari

Add a free climate card for Kertosari to your website or blog. Copy the code below.

Download climate data (CSV)

Frequently asked questions

When is the best time to visit Kertosari?

Based on climate normals, the best time to visit Kertosari is June–August.

What is the weather like in Kertosari in October?

In October, Kertosari averages a high of 32°C (90°F) and a low of 23°C (73°F), with 19 mm of rain on about 2 days.

How warm is the sea in Kertosari?

The sea is warmest in November (about 30°C (86°F)). Swimming season: January–December.

What is the rainiest month in Kertosari?

January, with rain on about 19 days.

What is the nearest airport to Kertosari?

Lieutenant Colonel Wisnu Airfield, about 62 km away.

What power plugs are used in Indonesia?

Plug types C, F, at 127 V.

What currency is used in Indonesia?

Indonesian Rupiah (IDR).

What is the emergency number in Indonesia?

112.

Is Indonesia safe to visit?

US travel advisory: Exercise increased caution. UK travel advice: No travel warnings.

What time zone is Kertosari in?

Asia/Jakarta (UTC+7).