| Puerto Rico is the easternmost island of the | | | | reverse effect of the south coast, where the |
| Greater Antilles in the northern Caribbean. The | | | | driest weather can be found. This is a region of |
| Atlantic Ocean borders it to the north and | | | | down sloping winds generally causing less frequent |
| Caribbean Sea to the south. Mountains cover the | | | | showers. |
| central part of Puerto Rico to the eastern coast | | | | Puerto Rico Temperatures |
| with some peaks over four thousand feet high. | | | | Temperatures in San Juan are quite uniform all |
| These mountains have a profound effect on | | | | year long. The warmest weather is from summer |
| precipitation regimes and to a lesser extent | | | | to early autumn. Daily highs are in the upper 80's |
| temperatures. Puerto Rico is also affected by | | | | with morning lows only in the mid 70's. The |
| hurricanes with the greatest threat during the | | | | coolest weather is in the winter months of |
| height of hurricane season from mid August into | | | | January and February. Daytime highs are still |
| October. | | | | warm with readings reaching the mid 80's. Lows |
| Puerto Rico Rainfall | | | | only drop to near 70. The mountains are a few |
| San Juan is a popular tourist destination. The | | | | degrees cooler, and the south coast a couple of |
| climate has a wet and dry season, but not as | | | | degrees warmer than what you would find at San |
| pronounced as some of the other Caribbean | | | | Juan. |
| islands. The wettest time of year occurs during | | | | Puerto Rico Travel Weather Summary |
| summer and autumn. Rainfall is in the range of | | | | Travelers going to Puerto Rico can expect a fairly |
| five to six inches per month from May to | | | | uniform climate. Temperatures do not change |
| December. Lesser amounts of two to four inches | | | | much during the year with the most pleasant |
| occur from January to April. | | | | readings during the winter. Lesser rainfall amounts |
| The higher elevations of the mountains have | | | | coincide with the slightly cooler temperatures |
| much heavier rainfall. Amounts of around 200 | | | | during the winter. Travelers are advised to stay |
| inches can be expected. This is because of the | | | | updated with latest tropical weather information if |
| moist trade winds being lifted by the mountains | | | | traveling during the hurricane season. |
| causing daily showers. The mountains have the | | | | |