Pack light summer wear at all times of the year, since the temperature rarely varies from 280C . Because of the heat, dressing is a fairly relaxed affair in Singapore with the accent on comfort. Some restaurants draw the line at shorts and slippers though and most discos insists that their "smart casual" dress code does not include blue jeans and T-shirts. Some require a jacket and tie for men at dinner. If you expect to be invited to a country club, you may need to dress up. But even if you left the lot at home, virtually anything can be bought in Singapore. And custom-made suit or dress can be run up in a day. Avoid wearing shorts, short skirts or sleeveless tops while visiting places of worship.
Though the temperature seldom drops below 250C do bring a jacket, shawl or sweater. Aggressive air-conditioning in some hotels makes it quite wintry, especially in the night. Natural fibres such as linen, cotton or silk are the most comfortable to wear in Singapore where it is quite humid even during the drier months from May to July. Most hotels offer same-day laundry services. There are some inexpensive laundry shops along Orchard Road too.
If you come from a temperate country, you may find that shoes which were comfortable back home becoming tight in Singapore. One should be equipped with at least one pair of comfortable and fairly loose walking shoes. Outdoor in the day, a hat and sunglasses are advisable. In rainy months, an umbrella comes in handy, but can be bought locally for as little as $3.
Pharmacies in Singapore are well stocked and are generally able to fill any prescription, but it is simpler to bring your own supply to avoid the trouble.
Some hotels have 110-volt outlets for shavers in the bathroom but the standard voltage in Singapore is 230 to 250 volts AC. Dual-voltage appliances like hair-dryers are handy. Most hotel housekeepers have transformers and adapters (the three-pin square plug is standard here) and the better hotels have hair-dryers.