It gets hotter in May. The highest maximum temperatures for the whole month stay above 37℃/98.6℉. It’s warmer than last month, and the amount of precipitation also increases. There are likely to be about 10 rainy days and the other days will be overcast and cloudy or sunny this month.

Average Maximum Average Minimum Highest Maximum Lowest Minimum
26 19 37 12
78.8 66.2 98.6 53.6

Sunny Days: about 2 days
Cloudy Days: about 11 days
Snow Days:about 10 days
Overcast Days: about 8 days

What to wear and bring?

In early May
In early May, there could be a couple of thunder showers, but the maximum temperature is rather high. Shorts and short sleeves are a comfortable clothing combination. Taking an umbrella with you all the time is also a good idea.
There are often thunder showers on Labor Day (May 1st). The temperature is usually between 22℃/71.6℉ and 30℃/86℉.

In mid-May
There are probably a couple of days of thunder showers during this period. It’s recommended that you bring an umbrella when you go out. Compared to early May, the maximum temperature rises to 37℃/98.6℉. You should wear short skirts, a thin short dress, shorts or other cool clothes. The UV index is very high, so sunscreen is extremely important.

In late May
The weather in late May is similar to early May. The minimum temperature is around 18℃/64.4℉. You will need to wear shorts, and short sleeves, and don’t forget use sun block every day.

Historical Weather in May

historical weather in mayclick here to enlarge