We’re excited to reveal our new interactive climate charts! With city-level data on monthly high and low temperatures, humidity, and precipitation, you have more information at your fingertips when planning your next trip. The charts are conveniently integrated into our Country Health Advice.
The data comes from our popular original 24 World Climate and Food Safety Charts, which we collected from weather stations, government agencies, and embassies around the world. Monthly averages are calculated based on 30 years of data. Thanks to the fantastic volunteers who helped with the data management and visualization of this project!
Climate and health
Being prepared for the climate at your destination affects more than just your wardrobe.
Dryness and humidity affect skin and respiratory conditions. Cold, dry air or hot, humid air can cause breathing difficulties in travellers with asthma or chronic obstructive pulmonary disease (COPD). A dry climate may aggravate skin conditions such as eczema.
The spread of infectious diseases is also significantly affected by the climate, both in terms of where diseases spread and when outbreaks occur.
During the rainy season in a tropical area, you may see an increase in the amount of stagnant water (ideal mosquito breeding sites). As a result, many places experience seasonal outbreaks of illnesses like Malaria, Dengue, and Chikungunya. On the other hand, the dry season offers the advantage of reduced mosquito populations and fewer cases of insect-borne illness. This is one of the reasons the WHO Emergency Committee on Zika Virus concluded that there would be low risk of Zika Virus infections during the 2016 Rio Olympics: The Games will take place during the Brazilian winter when mosquito populations are reduced.
Weather events like El Niño and climate change also have a major impact on infectious diseases. Climate change, for example, is altering the behaviour of insects, allowing them to spread to areas where they were not present historically. In North America, ticks are moving further north, bringing with them the risk of Lyme Disease. In Southern Europe, warmer summers have allowed mosquitoes carrying Dengue to infect people in France, Italy, and Portugal.
Climate information at a glance
- Click Country Health Advice in the main menu.
- Select a country.
- Click “View Climate Information by City” near the bottom of the menu on the left.
Climate data for up to 5 cities per country is included where available. The orange and dark grey bars indicate average monthly high and low temperatures, the blue line indicates humidity, and the light grey shaded area indicates the number of days of precipitation.
The temperature scale can be changed from Celsius to Fahrenheit by clicking the Celsius/Fahrenheit button above the chart. Hover over the bars to see detailed information for each month. You can also download or print the chart for a specific city by clicking the grey lines to the right of the chart.
More about climate and health
El Niño, Valley Fever, and Arizona – HealthMap
Atlas of Health and Climate – World Health Organization
Ecology drives the worldwide distribution of human diseases – PLOS Biology