Surabaya

Tropical Climate Overview in Surabaya, Indonesia

Weather Patterns

• Type: Tropical rainforest climate (Af) according to Köppen climate classification.
• Seasons: Primarily divided into two seasons: wet and dry.

Average Temperatures

• Year-Round: Average daily temperatures range from 25°C to 33°C (77°F to 91°F).
• Monthly Averages:
  • January: 26°C (79°F)
  • April: 28°C (82°F)
  • July: 27°C (81°F)
  • October: 28°C (82°F)

Humidity Levels

• Average Humidity: Ranges from 70% to 90%, with higher levels during the wet season.
• Impact: High humidity can make temperatures feel warmer, leading to discomfort.

Rainfall

• Wet Season: November to March, with peak rainfall in December and January.
  • Average Rainfall: 200-300 mm (7.9-11.8 inches) per month during peak months.
• Dry Season: April to October, with significantly less rainfall.

Seasonal Variations

• Wet Season: Frequent heavy rain, thunderstorms, and potential flooding.
• Dry Season: Less rain, more sunshine, and slightly cooler evenings.

Considerations for Visitors and Residents

Clothing Recommendations

• Lightweight Fabrics: Cotton or linen clothing to promote breathability.
• Loose-Fitting Attire: Helps with airflow and comfort.
• Rain Gear: Lightweight waterproof jackets or ponchos for the wet season.
• Footwear: Comfortable sandals or breathable shoes; waterproof options recommended during the wet season.

Health Precautions

• Hydration: Drink plenty of water to stay hydrated, especially in high humidity.
• Sunscreen: Use high-SPF sunscreen to protect against UV rays.
• Mosquito Protection: Use insect repellent to prevent mosquito-borne diseases; consider wearing long sleeves in the evening.

Tips for Managing Heat and Humidity

• Air Conditioning: Utilize air conditioning in homes and vehicles to stay cool.
• Indoor Activities: Plan outdoor activities for early morning or late afternoon to avoid peak heat.
• Cooling Products: Consider purchasing portable fans or cooling towels.

Costs and Procedures for Adapting to the Climate

• Clothing: Lightweight clothing can be found at local markets or stores, typically costing between IDR 100,000 to IDR 300,000 (approximately $7 to $21).
• Health Products: Sunscreen and insect repellent can be purchased at pharmacies or supermarkets, ranging from IDR 50,000 to IDR 150,000 ($3.50 to $10.50).
• Air Conditioning: Installation costs for air conditioning units vary; expect to pay between IDR 3,000,000 to IDR 10,000,000 ($210 to $700) depending on the unit and installation complexity.

Conclusion

Surabaya's tropical climate requires preparation for heat and humidity, particularly during the wet season. Adapting through appropriate clothing, health precautions, and lifestyle adjustments will enhance comfort and well-being in this vibrant city.