Is it okay to wear short sleeves in a business meeting?

Generally, no. Long-sleeved shirts for men are standard. If it is extremely hot, ensure your blazer is of high quality so you can remove it in private while maintaining a formal look.

Can I wear jeans to a casual business lunch?

Only if you are 100% sure the culture of the specific company is 'start-up' or 'casual.' In most traditional sectors, dark-wash, tailored denim is the absolute minimum, but slacks are always better.

Dressing for Business in Colombia: A Practical Guide

In Colombia, business dress is conservative, formal, and polished, regardless of the tropical climate. Opt for lightweight natural fabrics like linen blends or high-twist wool to stay cool while maintaining a professional appearance.

Select your fabrics carefully. Avoid heavy, non-breathable polyester suits. Choose high-twist tropical wool, linen-cotton blends, or lightweight seersucker. These look professional but allow airflow.
Layer for variable temperatures. While it is hot outside, offices and hotels in cities like Bogotá or Medellín blast the air conditioning. Always carry a blazer or a light sweater, even if it is 85°F outside.
Prioritize grooming and accessories. Colombian business culture values attention to detail. Ensure your shoes are polished, your clothing is pressed, and your hair is neat. Accessories like a quality watch or a leather portfolio are standard.
Err on the side of formality. Even if the local culture seems relaxed, dress one notch above the person you are meeting. A full suit for men and a blazer with trousers or a conservative dress for women is the safest default.

Is it okay to wear short sleeves in a business meeting?: Generally, no. Long-sleeved shirts for men are standard. If it is extremely hot, ensure your blazer is of high quality so you can remove it in private while maintaining a formal look.
Can I wear jeans to a casual business lunch?: Only if you are 100% sure the culture of the specific company is 'start-up' or 'casual.' In most traditional sectors, dark-wash, tailored denim is the absolute minimum, but slacks are always better.