December and January are the driest, coolest months and the best time to visit. In February the weather is pleasant, and you can party at the colorful Bissau carnival. Traveling is more difficult during the rainy season (June to October), when even major roads turn to mud and getting public transport to remote spots is a challenge. March to May are the hottest months, with daytime temperatures reaching 34°C (93°F) and humidity levels very high; daily maximums rarely dip below 30°C(86°F) throughout the year.
Fighting between troops from Guinea-Bissau and Senegalese separatist rebels along the northern border has made this area unsafe. Travelers are advised to monitor local information and to avoid this area at present.