Storing wines in Singapore can be challenging. Although the humidity level (70-80%) is good, the average temperature is definitely too high.
Wines should not be exposed to a temperature above 25°C for long periods of time - it may then become spoilt or "cooked" and develop off flavors. Keeping wines in the refrigerator is not recommended either: it is too cold, too dry and generates vibrations which are bad for the wines. However keeping bottles in the refrigerator for less than 2 months is acceptable (and definitely a better option than the 30°C outside temperature!). In general, temperature swings should be limited – such as transferring a wine from a warm room to a cool refrigerator.
Most experts recommend that wine be kept at constant temperatures between 10 and 15 °C.
Besides temperature, two other factors also have a pronounced effect on wine in storage: light and humidity. Wines should be kept away from direct lights and UV (which can trigger unwanted chemical reactions) and in a humid environment (about 75%) in order to keep wines with cork enclosures from drying out.
Having your own wine chiller is a great solution to protect your wines.