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Weather Abroad: Quick Celsius to Fahrenheit for Travellers

June 21, 2025 โ€ข 4 min read

You check the weather at your holiday destination and it says 28ยฐC. Is that hot? Cold? Do you need a jacket? If you grew up with Fahrenheit, Celsius weather forecasts can feel meaningless. Here is a practical guide to interpreting temperatures abroad.

Weather Temperature Ranges

Rather than memorising exact conversions, learn these ranges:

  • โ–ถ Below 0ยฐC (32ยฐF): Freezing โ€” ice, snow, heavy winter gear
  • โ–ถ 0-10ยฐC (32-50ยฐF): Cold โ€” winter coat, layers, gloves
  • โ–ถ 10-15ยฐC (50-59ยฐF): Cool โ€” jacket or sweater weather
  • โ–ถ 15-20ยฐC (59-68ยฐF): Mild โ€” light layers, comfortable
  • โ–ถ 20-25ยฐC (68-77ยฐF): Warm โ€” t-shirt weather, pleasant
  • โ–ถ 25-30ยฐC (77-86ยฐF): Hot โ€” summer clothing, sunscreen
  • โ–ถ 30-35ยฐC (86-95ยฐF): Very hot โ€” seek shade, stay hydrated
  • โ–ถ 35ยฐC+ (95ยฐF+): Extreme heat โ€” limit outdoor activity

Quick Mental Conversion Trick

For a rough estimate when you are out and about:

  1. Double the Celsius number
  2. Add 30

This gets you within a few degrees:

  • โ–ถ 10ยฐC: (10 ร— 2) + 30 = 50ยฐF (actual: 50ยฐF โ€” perfect)
  • โ–ถ 20ยฐC: (20 ร— 2) + 30 = 70ยฐF (actual: 68ยฐF โ€” close enough)
  • โ–ถ 30ยฐC: (30 ร— 2) + 30 = 90ยฐF (actual: 86ยฐF โ€” close)

City Weather in Context

Popular destinations and their typical summer/winter temperatures:

  • โ–ถ London: Winter 5ยฐC (41ยฐF), Summer 22ยฐC (72ยฐF)
  • โ–ถ Paris: Winter 4ยฐC (39ยฐF), Summer 25ยฐC (77ยฐF)
  • โ–ถ Tokyo: Winter 5ยฐC (41ยฐF), Summer 30ยฐC (86ยฐF)
  • โ–ถ Dubai: Winter 19ยฐC (66ยฐF), Summer 42ยฐC (108ยฐF)
  • โ–ถ Sydney: Winter 13ยฐC (55ยฐF), Summer 26ยฐC (79ยฐF)
  • โ–ถ Bangkok: Year-round 28-35ยฐC (82-95ยฐF)

Packing Tips Based on Temperature

  • โ–ถ Below 10ยฐC: Pack thermal base layers, insulated jacket, scarf, warm socks
  • โ–ถ 10-20ยฐC: Layers work best โ€” cardigan plus a light waterproof jacket
  • โ–ถ 20-30ยฐC: Light fabrics, shorts, sunglasses, sunscreen, hat
  • โ–ถ Above 30ยฐC: Loose linen or cotton, wide-brimmed hat, water bottle

When in doubt, check both the daytime high and overnight low at your destination. Many places have a 10-15ยฐC swing between day and night.

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