Do you need to know, when is the best time to go to San Marino? Then you should take a look here, what weather you can expect there during the year.
The climate of San Marino is Mediterranean. You can expect mild or cool winters and warm and sunny summers. Winter is usually much rainier than summer.
When speaking about the usual weather in this state, the information is relevant for example for these popular places: San Marino.
Let's look now what weather you can expect here. (Warning: As we don't have reliable data for this country, we use data from nearby locations for these statistics.) The warmest month here is July, the average maximum temperature is 28.8 ℃ (83.84 ℉). The average minimum temperature in this month is 17.7 ℃ (63.86 ℉). The coldest month here is January, the average maximum temperature is 7.5 ℃ (45.5 ℉). The average minimum temperature in this month is 0.3 ℃ (32.54 ℉). 
When travelling to some places in San Marino, always consider the altitude of the the place as well. The highest point here is Monte Titano (739 m) and the lowest point is Torrente Ausa (55 m). So there are not big differences in altitudes in this country. But the altitude affects the weather even so. 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 San Marino in January is this: The average highest temperature in San Marino in January is 7.5 ℃ (45.5 ℉). The average lowest temperature is 0.3 ℃ (32.54 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 8.25 ℃ (46.85 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 8.55 ℃ (47.39 ℉). The average rainfall is 47.6 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 8:56 (hours and minutes), in the middle of the month 9:15 and at the end of the month 9:47.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in February is this: The average highest temperature in San Marino in February is 9.6 ℃ (49.28 ℉). The average lowest temperature is 2 ℃ (35.6 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 8.55 ℃ (47.39 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 11.65 ℃ (52.97 ℉). The average rainfall is 48.8 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 9:47 (hours and minutes), in the middle of the month 10:26 and at the end of the month 11:10.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in March is this: The average highest temperature in San Marino in March is 13.7 ℃ (56.66 ℉). The average lowest temperature is 4.6 ℃ (40.28 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 11.65 ℃ (52.97 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 15.5 ℃ (59.9 ℉). The average rainfall is 58.4 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 11:10 (hours and minutes), in the middle of the month 11:56 and at the end of the month 12:42.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.
Typical (usual) weather in San Marino in April is this: The average highest temperature in San Marino in April is 17.3 ℃ (63.14 ℉). The average lowest temperature is 7.5 ℃ (45.5 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 15.5 ℃ (59.9 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 19.7 ℃ (67.46 ℉). The average rainfall is 52.8 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 12:42 (hours and minutes), in the middle of the month 13:26 and at the end of the month 14:08.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.
Typical (usual) weather in San Marino in May is this: The average highest temperature in San Marino in May is 22.1 ℃ (71.78 ℉). The average lowest temperature is 11.5 ℃ (52.7 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 19.7 ℃ (67.46 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 24.25 ℃ (75.65 ℉). The average rainfall is 50.4 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 14:08 (hours and minutes), in the middle of the month 14:45 and at the end of the month 15:12.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in June is this: The average highest temperature in San Marino in June is 26.4 ℃ (79.52 ℉). The average lowest temperature is 15.5 ℃ (59.9 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 24.25 ℃ (75.65 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 27.6 ℃ (81.68 ℉). The average rainfall is 51.7 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 15:12 (hours and minutes), in the middle of the month 15:27 and at the end of the month 15:27.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.
Typical (usual) weather in San Marino in July is this: The average highest temperature in San Marino in July is 28.8 ℃ (83.84 ℉). The average lowest temperature is 17.7 ℃ (63.86 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 27.6 ℃ (81.68 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 28.2 ℃ (82.76 ℉). The average rainfall is 53.5 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 15:27 (hours and minutes), in the middle of the month 15:11 and at the end of the month 14:43.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in August is this: The average highest temperature in San Marino in August is 27.6 ℃ (81.68 ℉). The average lowest temperature is 17.5 ℃ (63.5 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 28.2 ℃ (82.76 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 26.45 ℃ (79.61 ℉). The average rainfall is 67 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 14:43 (hours and minutes), in the middle of the month 14:06 and at the end of the month 13:25.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in September is this: The average highest temperature in San Marino in September is 25.3 ℃ (77.54 ℉). The average lowest temperature is 14.7 ℃ (58.46 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 26.45 ℃ (79.61 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 22.3 ℃ (72.14 ℉). The average rainfall is 66.5 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 13:25 (hours and minutes), in the middle of the month 12:41 and at the end of the month 11:56.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in October is this: The average highest temperature in San Marino in October is 19.3 ℃ (66.74 ℉). The average lowest temperature is 10.8 ℃ (51.44 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 22.3 ℃ (72.14 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 16.5 ℃ (61.7 ℉). The average rainfall is 78.3 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 11:56 (hours and minutes), in the middle of the month 11:11 and at the end of the month 10:27.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in November is this: The average highest temperature in San Marino in November is 13.7 ℃ (56.66 ℉). The average lowest temperature is 6 ℃ (42.8 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 16.5 ℃ (61.7 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 11.35 ℃ (52.43 ℉). The average rainfall is 73.5 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 10:27 (hours and minutes), in the middle of the month 9:48 and at the end of the month 9:16.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in San Marino in December is this: The average highest temperature in San Marino in December is 9 ℃ (48.2 ℉). The average lowest temperature is 1.7 ℃ (35.06 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 11.35 ℃ (52.43 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 8.25 ℃ (46.85 ℉). The average rainfall is 55.6 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 9:16 (hours and minutes), in the middle of the month 8:56 and at the end of the month 8:53.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.