MyCruiseForecast

Sunda Strait, Indonesia

Krakatoa (Anak Krakatau) cruise weather by month

What to expect when your ship is in Krakatoa (Anak Krakatau) in any month: temperatures, how often it rains, wind, sea temperature and wave heights.

  • Septemberbest month, rated 87 of 100

Excellent. Few rainy days, calm seas and warm water.

  1. January 73
  2. February 70
  3. March 65
  4. April 75
  5. May 75
  6. June 74
  7. July 78
  8. August 83
  9. September 87
  10. October 83
  11. November 75
  12. December 72
Excellent, 85 and upGood, 70 to 84Fair, 55 to 69Poor, under 55

Best time to cruise to Krakatoa (Anak Krakatau)

The best month for cruise weather in Krakatoa (Anak Krakatau) is September, rated 87 out of 100 (Excellent): few rainy days, calm seas and warm water. August and October score nearly as well. The weakest month is March (65, Fair): many rainy days.

How the rating works

Each month scores out of 100 from five things: the average high (30 points; 64 to 82°F is full marks), how often it rains (25), how rough the sea gets (15), how warm the water is where swimming matters (10) and storms (20: how often a tropical storm passed within 90 miles since 1980, or how often gales struck in the 20-year record, whichever is worse). A part with no data is left out and the rest scaled up. The weights are a judgment about what makes a stop pleasant, not a measurement. Crowds and fares are not included.

Weather in Krakatoa (Anak Krakatau) by month

Average highs run from 86°F (30°C) in September to 88°F (31°C) in May. Rain falls on the fewest days in September and the most in March. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2006–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
MonthRatingHigh / lowRain daysWindSea tempTypical seasSun
January73Good86 / 79°F30 / 26°C1 in 10 days: 85–88°F53%16 mph26 km/h–3 ft (1.0 m)Slight; rougher days up to 5 ft9.2 hrs81% humidity
February70Good87 / 79°F30 / 26°C1 in 10 days: 85–89°F53%16 mph26 km/h–4 ft (1.2 m)Slight; rougher days up to 6 ft9.4 hrs80% humidity
March65Fair87 / 80°F31 / 26°C1 in 10 days: 86–89°F63%16 mph26 km/h–4 ft (1.1 m)Slight; rougher days up to 6 ft9.3 hrs81% humidity
April75Good87 / 80°F31 / 27°C1 in 10 days: 86–89°F54%14 mph23 km/h86°F30°C3 ft (0.9 m)Slight; rougher days up to 4 ft9.4 hrs81% humidity
May75Good88 / 81°F31 / 27°C1 in 10 days: 87–89°F50%14 mph22 km/h86°F30°C3 ft (0.9 m)Slight; rougher days up to 4 ft9.8 hrs80% humidity
June74Good88 / 80°F31 / 27°C1 in 10 days: 86–89°F53%14 mph22 km/h86°F30°C3 ft (1.0 m)Slight; rougher days up to 4 ft9.6 hrs79% humidity
July78Good87 / 80°F31 / 26°C1 in 10 days: 86–89°F41%16 mph25 km/h85°F29°C4 ft (1.1 m)Slight; rougher days up to 5 ft9.7 hrs78% humidity
August83Good86 / 79°F30 / 26°C1 in 10 days: 85–88°F32%17 mph27 km/h85°F29°C4 ft (1.1 m)Slight; rougher days up to 5 ft10.2 hrs78% humidity
September87Excellent86 / 78°F30 / 26°C1 in 10 days: 84–87°F27%17 mph28 km/h85°F29°C4 ft (1.1 m)Slight; rougher days up to 4 ft10.4 hrs79% humidity
October83Good86 / 79°F30 / 26°C1 in 10 days: 85–87°F36%17 mph28 km/h85°F30°C3 ft (1.0 m)Slight; rougher days up to 4 ft10.3 hrs80% humidity
November75Good86 / 79°F30 / 26°C1 in 10 days: 85–87°F51%17 mph28 km/h84°F29°C3 ft (0.9 m)Slight; rougher days up to 6 ft9.1 hrs81% humidity
December72Good86 / 79°F30 / 26°C1 in 10 days: 85–88°F52%18 mph29 km/h85°F29°C4 ft (1.2 m)Slight; rougher days up to 7 ft8.2 hrs82% humidity

These are averages for 2006–2025 (20 years) from ECMWF’s ERA5 climate record, adjusted to local detail with a higher-resolution ECMWF analysis and Météo-France waves, then checked against weather-station records from NOAA (GHCN-Daily). There is no suitable station near this port, so the check was between the two model sources. They agree closely here.

Check the forecast for your sailing

Upcoming cruises in Krakatoa (Anak Krakatau)

1 ship from 1 cruise line is scheduled here, 1 visit in total. The next 1:

Ships that visit Krakatoa (Anak Krakatau)

Holland America Line

Nearby cruise ports

Wave heights are significant wave height. What the numbers mean for a cruise. Sources and method are on the about page.