Weekly note
Lake Toba
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Photo by Yurianto76, CC BY-SA 4.0, via Wikimedia Commons.

The numbers

Daily high26°C
Nightly low20°C
Feels like, afternoon31°C
Rainy days, 1 mm or more16 · 196 mm
Humidity85%
Sunshine8.6 h/day
Daylight12.2 h/day
Crowds80 / 100, higher is quieter

Ten-year averages for this calendar month. A rainy day is one with at least 1 mm of rain, as a weather station counts it. The model these figures come from drizzles more than a rain gauge, the more so the warmer the month, so its days count from 2 mm, rising to 5 mm in the hottest.

Weather read at Tuktuk, on Samosir island: ten years of ERA5 and ERA5-Land reanalysis, through Open-Meteo's open data.

How busy it gets

May: quiet. Busiest in August; quietest in May.

Public holidays in May

Holidays crowd a place out and push fares up around them; they count toward the crowd score above.

Lake Toba in pictures

What to pack

  • Summer clothes by day, highs around 26°C.
  • Rain gear you will actually use: about 16 rainy days and 196 mm.
  • Sun protection: about 9 hours of sunshine a day.
  • Humidity averages 85%; breathable fabrics dry faster.

Each line is a threshold over the ten-year figures above, not advice from anywhere else.

Before you go

Type C and F plugs at 127 / 230 V. Drives on the left. The currency is the Rupiah. No UK Foreign Office advice against travel. Everything for Indonesia: cost of living, languages, emergency numbers and health.

On arrival in Lake Toba: the apps, paying, getting around, tipping and the emergency numbers.

May elsewhere

In May from

The other months at Lake Toba

← April · All twelve months at Lake Toba · June →

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