Do you need to know, when is the best time to go to Bosnia and Herzegovina? Then you should take a look here, what weather you can expect there during the year.
The climate of Bosnia and Herzegovina is Mediterranean in the south, the Western and the Central parts have hot and dry summers, but very cold winters. The north-eastern part of the country has a continental climate. Areas of high elevation have short, cool summers, and long, severe winters. Along the coast the winters are mild, usually rainy.
When speaking about the usual weather in this state, the information is relevant for example for these popular places: Banja Luka, Bihać, Bosanska Krajina, Bosanska Krupa, Central Bosnia, Derventa, Doboj, Foča, Glamoč, Gradiska, Gračanica, Grude, Herzegovina, Jablanica, Jajce, Konjic, Kozara, Krupa na Vrbasu, Međugorje, Mostar, Mrkonjić Grad, Neum, Northeastern Bosnia, Olovo, Pale, Posavina, Prijedor, Sarajevo, Sarajevo Region, Srebrenica, Teslic, Travnik, Trebinje, Tuzla, Vareš, Višegrad, Zenica, Široki Brijeg.
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 July, the average maximum temperature is 26.1 ℃ (78.98 ℉). The average minimum temperature in this month is 12.8 ℃ (55.04 ℉). The coldest month here is January, the average maximum temperature is 2.9 ℃ (37.22 ℉). The average minimum temperature in this month is -4.2 ℃ (24.44 ℉). The most rainy month here is April, the average number of rainy days is 11.1. The least rainy month here is August, the average number of rainy days is 7.8. 
When travelling to some places in Bosnia and Herzegovina, always consider the altitude of the the place as well. The highest point here is Maglic (2386 m) and the lowest point is Adriatic 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 Bosnia and Herzegovina in January is this: The average highest temperature in Bosnia and Herzegovina in January is 2.9 ℃ (37.22 ℉). The average lowest temperature is -4.2 ℃ (24.44 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 3.3 ℃ (37.94 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 4.55 ℃ (40.19 ℉). The average number of rainy days in January is 10.2. The average rainfall is 70.8 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 8:57 (hours and minutes), in the middle of the month 9:16 and at the end of the month 9:48.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 Bosnia and Herzegovina in February is this: The average highest temperature in Bosnia and Herzegovina in February is 6.2 ℃ (43.16 ℉). The average lowest temperature is -2.1 ℃ (28.22 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 4.55 ℃ (40.19 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 8.35 ℃ (47.03 ℉). The average number of rainy days in February is 8.9. The average rainfall is 67.6 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 9:48 (hours and minutes), in the middle of the month 10:27 and at the end of the month 11:11.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 Bosnia and Herzegovina in March is this: The average highest temperature in Bosnia and Herzegovina in March is 10.5 ℃ (50.9 ℉). The average lowest temperature is 0.9 ℃ (33.62 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 8.35 ℃ (47.03 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 12.85 ℃ (55.13 ℉). The average number of rainy days in March is 10.1. The average rainfall is 68.3 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 11:11 (hours and minutes), in the middle of the month 11:56 and at the end of the month 12:41.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 Bosnia and Herzegovina in April is this: The average highest temperature in Bosnia and Herzegovina in April is 15.2 ℃ (59.36 ℉). The average lowest temperature is 4.7 ℃ (40.46 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 12.85 ℃ (55.13 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 18.05 ℃ (64.49 ℉). The average number of rainy days in April is 11.1. 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 12:41 (hours and minutes), in the middle of the month 13:26 and at the end of the month 14:07.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 Bosnia and Herzegovina in May is this: The average highest temperature in Bosnia and Herzegovina in May is 20.9 ℃ (69.62 ℉). The average lowest temperature is 8.9 ℃ (48.02 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 18.05 ℃ (64.49 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 22 ℃ (71.6 ℉). The average number of rainy days in May is 11. The average rainfall is 82.8 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 14:07 (hours and minutes), in the middle of the month 14:44 and at the end of the month 15:11.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 Bosnia and Herzegovina in June is this: The average highest temperature in Bosnia and Herzegovina in June is 23.1 ℃ (73.58 ℉). The average lowest temperature is 11.8 ℃ (53.24 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 22 ℃ (71.6 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 24.6 ℃ (76.28 ℉). The average number of rainy days in June is 10.8. The average rainfall is 90 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 15:11 (hours and minutes), in the middle of the month 15:26 and at the end of the month 15:26.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 Bosnia and Herzegovina in July is this: The average highest temperature in Bosnia and Herzegovina in July is 26.1 ℃ (78.98 ℉). The average lowest temperature is 12.8 ℃ (55.04 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 24.6 ℃ (76.28 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 26.1 ℃ (78.98 ℉). The average number of rainy days in July is 9.2. The average rainfall is 78 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 15:26 (hours and minutes), in the middle of the month 15:10 and at the end of the month 14:42.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 Bosnia and Herzegovina in August is this: The average highest temperature in Bosnia and Herzegovina in August is 26.1 ℃ (78.98 ℉). The average lowest temperature is 12.8 ℃ (55.04 ℉). At the beginning of August you can expect lower temperatures, the average highest temperature is around 26.1 ℃ (78.98 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 24.1 ℃ (75.38 ℉). The average number of rainy days in August is 7.8. The average rainfall is 71 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 14:42 (hours and minutes), in the middle of the month 14:06 and at the end of the month 13:24.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 Bosnia and Herzegovina in September is this: The average highest temperature in Bosnia and Herzegovina in September is 22.1 ℃ (71.78 ℉). The average lowest temperature is 10.1 ℃ (50.18 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 24.1 ℃ (75.38 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 19.6 ℃ (67.28 ℉). The average number of rainy days in September is 7.9. The average rainfall is 69.2 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 13:24 (hours and minutes), in the middle of the month 12:41 and at the end of the month 11:56.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 Bosnia and Herzegovina in October is this: The average highest temperature in Bosnia and Herzegovina in October is 17.1 ℃ (62.78 ℉). The average lowest temperature is 5.9 ℃ (42.62 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 19.6 ℃ (67.28 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 13.6 ℃ (56.48 ℉). The average number of rainy days in October is 8.1. The average rainfall is 76.8 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 11:56 (hours and minutes), in the middle of the month 11:11 and at the end of the month 10:28.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 Bosnia and Herzegovina in November is this: The average highest temperature in Bosnia and Herzegovina in November is 10.1 ℃ (50.18 ℉). The average lowest temperature is 1.8 ℃ (35.24 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 13.6 ℃ (56.48 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 6.9 ℃ (44.42 ℉). The average number of rainy days in November is 9.8. The average rainfall is 95.1 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 10:28 (hours and minutes), in the middle of the month 9:49 and at the end of the month 9:17.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 Bosnia and Herzegovina in December is this: The average highest temperature in Bosnia and Herzegovina in December is 3.7 ℃ (38.66 ℉). The average lowest temperature is -2.5 ℃ (27.5 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 6.9 ℃ (44.42 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 3.3 ℃ (37.94 ℉). The average number of rainy days in December is 10.8. The average rainfall is 84.7 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 9:17 (hours and minutes), in the middle of the month 8:58 and at the end of the month 8:54.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.| Sarajevo | temperature: - | highest temperature: 3.7 ℃ (38.66 ℉) | lowest temperature: -2.5 ℃ (27.5 ℉) | rainfall: 84.7mm | rainy days: 10.8 |
| Mostar | temperature: - | highest temperature: 10.1 ℃ (50.18 ℉) | lowest temperature: 3.6 ℃ (38.48 ℉) | rainfall: 178.5mm | rainy days: 13.3 |
| Tuzla | temperature: - | highest temperature: 5.3 ℃ (41.54 ℉) | lowest temperature: -2.3 ℃ (27.86 ℉) | rainfall: 71.2mm | rainy days: 15.9 |
| Banja Luka | temperature: - | highest temperature: 5.4 ℃ (41.72 ℉) | lowest temperature: -2.4 ℃ (27.68 ℉) | rainfall: 87.8mm | rainy days: 15.2 |