Zhoushan Annual Weather Overview

  • January: 5°C (41°F) – 9°C (48°F) 

  • February: ~6°C (43°F) – ~10°C (50°F)

  • March: ~9°C (48°F) – ~15°C (59°F) 

  • April: ~13°C (55°F) – ~20°C (68°F) 

  • May: ~18°C (64°F) – ~25°C (77°F) 

  • June: ~21°C (70°F) – ~28°C (82°F)

  • July: ~24°C (75°F) – ~32°C (90°F)

  • August: ~25°C (77°F) – ~30 – 32°C (86–90°F)

  • September: ~22°C (72°F) – ~28°C (82°F)

  • October: ~18°C (64°F) – ~24°C (75°F)

  • November: ~13°C (55°F) – ~19°C (66°F)

  • December: ~8°C (46°F) – ~14°C (57°F)

Zhoushan Monthly Climate, Clothing Tips, and Travel Suggestions

January — Cool and Moist Winter

  • Season: Winter

  • Average Temperature: Low ~ 41°F, High ~ 48°F (5–9°C)

  • Clothing Suggestions: Warm coat, sweater or fleece, scarf — bring a windbreaker for coastal breeze.

  • Do You Need an Umbrella?: Light to moderate rainfall possible; advisable to carry rain protection

February — Chilly with Early Spring Feel

  • Season: Late Winter → Early Spring

  • Average Temperature: Low ~ 43°F, High ~ 50°F (~6–10°C)

  • Clothing Suggestions: Medium coat or jacket, layers such as long-sleeve shirts and sweater.

  • Do You Need an Umbrella?: Rain possible; a compact umbrella is useful.

March — Spring Approaches, Crisp but Warming

  • Season: Spring

  • Average Temperature: Low ~ 48°F, High ~ 59°F (9–15°C)

  • Clothing Suggestions: Light jacket, sweater; layers recommended as temperatures vary.

  • Do You Need an Umbrella?: Occasional showers; good to have an umbrella on hand.

April — Pleasant Spring, Good for Sightseeing

  • Season: Spring

  • Average Temperature: Low ~ 55°F, High ~ 68°F (13–20°C)

  • Clothing Suggestions: Light jacket, long-sleeve shirts or T-shirt depending on daytime.

  • Do You Need an Umbrella?: Rain increases; bring a light umbrella or raincoat.

May — Mild Early Summer, Comfortable Weather

  • Season: Late Spring → Early Summer

  • Average Temperature: Low ~ 64°F, High ~ 77°F (18–25°C)

  • Clothing Suggestions: Long-sleeve or short-sleeve shirts, light pants, possibly a windbreaker for breezy coast.

  • Do You Need an Umbrella?: Some rainfall; handy to carry rain protection.

June — Summer Arrival, Rainy Season Begins

  • Season: Summer

  • Average Temperature: Low ~ 70°F, High ~ 82°F (21–28°C)

  • Clothing Suggestions: Lightweight clothes, moisture-wicking fabrics; waterproof shoes advised if planning outdoor or coastal activities.

  • Do You Need an Umbrella?: Yes — June tends to be wet. Rain gear recommended.

July — Hot and Humid, Peak Summer

  • Season: Summer

  • Average Temperature: Low ~ 75°F, High ~ 90°F (24–32°C)

  • Clothing Suggestions: Shorts, T-shirts, light breathable fabrics; sun hat and sunglasses for coastal sun.

  • Do You Need an Umbrella?: Yes — for rain or strong sun. Typhoon season begins, so check weather updates.

August — Warm Summer, High Humidity

  • Season: Summer

  • Average Temperature: Low ~ 77°F, High ~ 86–90°F (25–30/32°C)

  • Clothing Suggestions: Breathable, lightweight clothes; be ready for sudden showers.

  • Do You Need an Umbrella?: Definitely — for rain and possibly typhoon-related showers.

September — Summer Fades into Autumn, Still Warm

  • Season: Early Autumn

  • Average Temperature: Low ~ 72°F, High ~ 82°F (22–28°C)

  • Clothing Suggestions: Light shirts or long-sleeve, shorts or light pants depending on time of day.

  • Do You Need an Umbrella?: Rain less frequent but possible; lightweight rain jacket or umbrella recommended.

October — Mild Autumn, Good Travel Time

  • Season: Autumn

  • Average Temperature: Low ~ 64°F, High ~ 75°F (18–24°C)

  • Clothing Suggestions: Long-sleeve shirts, light jacket — comfortable for daytime activities.

  • Do You Need an Umbrella?: Rain unlikely but carry a folded umbrella if you plan outdoor excursions.

November — Cooler Autumn, Pleasant for Sightseeing

  • Season: Autumn

  • Average Temperature: Low ~ 55°F, High ~ 66°F (13–19°C)

  • Clothing Suggestions: Light jacket, sweater or layers to adapt to changing day/night temps.

  • Do You Need an Umbrella?: Rain chances lower, but a small umbrella won’t hurt.

December — Early Winter, Chilly but Mild Compared to Inland

  • Season: Winter

  • Average Temperature: Low ~ 46°F, High ~ 57°F (8–14°C)

  • Clothing Suggestions: Warm coat, scarf, maybe gloves — especially for coastal wind.

  • Do You Need an Umbrella?: Occasionally useful; rain still possible.

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