Seasonal rainfall and temperature patterns are important explanatory variables for Vector-borne diseases. Are you travelling and want information about the monthly temperature and rainfall pattern at your destination?
Will you be arriving during the wet season or in the dry, and is this at the hottest time of the year? Average monthly temperature and precipitation is presented below according to the Köppen-Geiger climate classification,
one of the most widely used climate classification systems. Simply find out which climate zone corresponds to your destination. Note that the climatic patterns here are long term averages so within-zone and year-to-year
differences represent potentially significant sources of variation - in short, what you experience could be different from what is portrayed here.
The Köppen climate classification scheme divides climates into five main groups, each having several types and subtypes. Each particular climate type is represented by a two- to four-letter symbol, i.e. Af, Am, Aw,
BWh, BWk, BSh, BSk, Csa, Csb, Cwa, Cwb, Cwc, Cfa, Cfb, Cfc, Dsa, Dsb, Dsc, Dsd, Dwa, Dwb, Dwc, Dwd, Dfa, Dfb, Dfc, Dfd, ET, EF. For example, Dwa represents Continental/microthermal climates (D), with dry winters (w),
and warmest month average temperature above 22 °C (72 °F) with at least four months averaging above 10 °C (a). See Wikipedia (https://en.wikipedia.org/wiki/K%C3%B6ppen_climate_classification) for a more detailed explanation. We obtained an updated Köppen-Geiger climate classification map on a regular 0.5 degree lat/lon grid for the period 1951 to 2000 from
the World Maps of Köppen-Geiger climate classification site. This map was based on Kottek, M., J. Grieser, C. Beck, B. Rudolf, and F. Rubel, 2006: World Map of the Köppen-Geiger climate classification updated.
Meteorol. Z., 15, 259-263. DOI: 10.1127/0941-2948/2006/0130. To this scheme we added a prefix letter (N, S) to represent areas in the northern and southern hemisphere. This was necessary to account
for the reversal of seasons according to hemisphere, i.e. summer in the north occurs during winter in the south. We used ArcMap 10.1 to clip the Köppen raster along the equator then the Zonal Statistics as
Table tool in Spatial Analyst to calculate the mean values for maximum and minimum temperature (Tmax, Tmin), and precipitation (Prec) for each month for each of 29 northern hemisphere and 18 southern
hemisphere climate zones. Temperature and precipitation data were from WorldClim interpolations of observed data, representative of 1950-2000, at 5 arc-minute resolution. Means
were assembled and graphically displayed in MS Excel to show monthly variation for each of the climate zones.