Do you need to know, when is the best time to go to Philippines? Then you should take a look here, what weather you can expect there during the year.
The climate of Philippines is tropical marine. There is northeast monsoon from November to April, and southwest monsoon from May to October. You can generally expect relatively high temperature, strong humidity and lots of rainfall, but there are many microclimates in the area of this country.
As Philippines has a really huge area, the information below relate mostly only to the area around the capital of this country. To see information about other places, please, choose one of these areas: Luzon.
Let's look now what weather you can expect in the area around the capital and in many other cities. The warmest month here is April, the average maximum temperature is 34.4 ℃ (93.92 ℉). The average minimum temperature in this month is 26.1 ℃ (78.98 ℉). The coldest month here is January, the average maximum temperature is 29.2 ℃ (84.56 ℉). The average minimum temperature in this month is 23.9 ℃ (75.02 ℉). 
When travelling to some places in Philippines, always consider the altitude of the the place as well. The highest point here is Mount Apo (2954 m) and the lowest point is Philippine Sea (0 m). So there are quite big differences in altitudes in this country, so you can expect the weather to be different in different altitudes as well. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in Philippines in January is this: The average highest temperature in Philippines in January is 29.2 ℃ (84.56 ℉). The average lowest temperature is 23.9 ℃ (75.02 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 29.55 ℃ (85.19 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 29.55 ℃ (85.19 ℉). The average rainfall is 18.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:16 (hours and minutes), in the middle of the month 11:21 and at the end of the month 11:29.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in February is this: The average highest temperature in Philippines in February is 29.9 ℃ (85.82 ℉). The average lowest temperature is 23.8 ℃ (74.84 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 29.55 ℃ (85.19 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 30.9 ℃ (87.62 ℉). The average rainfall is 8.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:29 (hours and minutes), in the middle of the month 11:39 and at the end of the month 11:51.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in March is this: The average highest temperature in Philippines in March is 31.9 ℃ (89.42 ℉). The average lowest temperature is 25.3 ℃ (77.54 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 30.9 ℃ (87.62 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 33.15 ℃ (91.67 ℉). The average rainfall is 10.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:51 (hours and minutes), in the middle of the month 12:03 and at the end of the month 12:15.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in April is this: The average highest temperature in Philippines in April is 34.4 ℃ (93.92 ℉). The average lowest temperature is 26.1 ℃ (78.98 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 33.15 ℃ (91.67 ℉). At the end of April you can expect lower temperatures, the average highest temperature is around 34.2 ℃ (93.56 ℉). The average rainfall is 21.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:15 (hours and minutes), in the middle of the month 12:27 and at the end of the month 12:38.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in May is this: The average highest temperature in Philippines in May is 34 ℃ (93.2 ℉). The average lowest temperature is 27.1 ℃ (80.78 ℉). At the beginning of May you can expect higher temperatures, the average highest temperature is around 34.2 ℃ (93.56 ℉). At the end of May you can expect lower temperatures, the average highest temperature is around 33.35 ℃ (92.03 ℉). The average rainfall is 162.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:38 (hours and minutes), in the middle of the month 12:48 and at the end of the month 12:55.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in June is this: The average highest temperature in Philippines in June is 32.7 ℃ (90.86 ℉). The average lowest temperature is 26.5 ℃ (79.7 ℉). At the beginning of June you can expect higher temperatures, the average highest temperature is around 33.35 ℃ (92.03 ℉). At the end of June you can expect lower temperatures, the average highest temperature is around 32.25 ℃ (90.05 ℉). The average rainfall is 264.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:55 (hours and minutes), in the middle of the month 12:58 and at the end of the month 12:58.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in July is this: The average highest temperature in Philippines in July is 31.8 ℃ (89.24 ℉). The average lowest temperature is 25.7 ℃ (78.26 ℉). At the beginning of July you can expect higher temperatures, the average highest temperature is around 32.25 ℃ (90.05 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 31.65 ℃ (88.97 ℉). The average rainfall is 425.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:58 (hours and minutes), in the middle of the month 12:54 and at the end of the month 12:47.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in August is this: The average highest temperature in Philippines in August is 31.5 ℃ (88.7 ℉). The average lowest temperature is 25.4 ℃ (77.72 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 31.65 ℃ (88.97 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 31.1 ℃ (87.98 ℉). The average rainfall is 494.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:47 (hours and minutes), in the middle of the month 12:38 and at the end of the month 12:27.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in September is this: The average highest temperature in Philippines in September is 30.7 ℃ (87.26 ℉). The average lowest temperature is 25.8 ℃ (78.44 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 31.1 ℃ (87.98 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 30.65 ℃ (87.17 ℉). The average rainfall is 323.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:27 (hours and minutes), in the middle of the month 12:15 and at the end of the month 12:03.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in October is this: The average highest temperature in Philippines in October is 30.6 ℃ (87.08 ℉). The average lowest temperature is 25.9 ℃ (78.62 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 30.65 ℃ (87.17 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 30.6 ℃ (87.08 ℉). The average rainfall is 270 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:03 (hours and minutes), in the middle of the month 11:51 and at the end of the month 11:39.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in November is this: The average highest temperature in Philippines in November is 30.6 ℃ (87.08 ℉). The average lowest temperature is 24.8 ℃ (76.64 ℉). At the beginning of November you can expect lower temperatures, the average highest temperature is around 30.6 ℃ (87.08 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 30.25 ℃ (86.45 ℉). The average rainfall is 132.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:39 (hours and minutes), in the middle of the month 11:29 and at the end of the month 11:21.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Philippines in December is this: The average highest temperature in Philippines in December is 29.9 ℃ (85.82 ℉). The average lowest temperature is 23.6 ℃ (74.48 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 30.25 ℃ (86.45 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 29.55 ℃ (85.19 ℉). The average rainfall is 74.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:21 (hours and minutes), in the middle of the month 11:16 and at the end of the month 11:15.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.