Open the Guinea-Bissau time converter: Go to https://www.xconvert.com/time-converter/guinea-bissau, where Guinea-Bissau is pre-loaded so you can immediately view local time for Bissau and compare it visually across a 24-hour grid. This is useful if you are planning a call with a contact in Bissau, coordinating NGO field work in West Africa, or checking whether business hours overlap with teams in Europe or North America.
Add comparison cities with the “+ Add City” button: Click + Add City and search for cities such as Lisbon, Dakar, or London to compare Guinea-Bissau with key Portuguese-speaking, regional, and international business connections. Lisbon is relevant because Portuguese is the official language of Guinea-Bissau, Dakar is a major West African transport and trade hub nearby, and London is often used for international finance, shipping, and development coordination.
Drag on the grid to select a meeting window: Click Select to enter selection mode, then drag across the Guinea-Bissau row from 9:00 AM to 11:00 AM to highlight a practical work block in purple. Because Guinea-Bissau uses UTC+0 year-round, that same window is 10:00 AM to 12:00 PM in Lisbon during winter, but 9:00 AM to 11:00 AM in London during winter and 10:00 AM to 12:00 PM in London during British Summer Time, which helps you avoid scheduling errors during European DST months.
Export the selected time range: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link depending on how you want to distribute the meeting. For example, an aid organization coordinating staff in Bissau and partners in Lisbon can send an ICS file so the event appears correctly in each person’s local calendar, while a share link is useful for quickly confirming a cross-border call time in email or chat.

Time Zones in Guinea-Bissau

Guinea-Bissau has one time zone for the entire country: Greenwich Mean Time (GMT) with a standard offset of UTC+0. This single national time applies across Bissau, regional towns, and the Bijagós Archipelago, so there are no internal clock differences to manage when scheduling domestic travel, government operations, or nationwide broadcasts.

A notable feature of Guinea-Bissau’s time system is its simplicity: it does not use multiple time zones like the United States or Russia, and it does not use a half-hour or quarter-hour offset such as India (UTC+5:30) or Nepal (UTC+5:45). For users comparing West African schedules, this makes Guinea-Bissau straightforward because its civil time stays aligned with the prime meridian standard at UTC+0 throughout the year.

In practical terms, Guinea-Bissau is 1 hour behind Lagos (UTC+1), the same as Dakar and Abidjan (UTC+0), and usually 1 hour behind Paris during European winter but 2 hours behind Paris during European summer when France observes daylight saving time. That means when it is 9:00 AM in Bissau, it is 10:00 AM in Lagos, 9:00 AM in Dakar, 10:00 AM in Paris in January, and 11:00 AM in Paris in July.

Guinea-Bissau Country Details

Guinea-Bissau is a West African country on the Atlantic coast, bordered by Senegal to the north and Guinea to the southeast, with Bissau as its capital and largest city. Its coastal geography and island networks, especially the Bijagós Islands, make time coordination important for transport planning, fisheries, port activity, and humanitarian logistics.

The country has a population of 1,874,309 and a land area of 36,120 km², making it a relatively small state by both population and territory compared with larger African economies. This scale contributes to the practicality of maintaining one national time zone, since there is no large east-west spread that would justify separate regional clocks.

Guinea-Bissau uses the West African CFA franc (XOF), a currency shared with several other countries in the West African Economic and Monetary Union. For trade, remittances, and travel budgeting, this matters because businesses dealing with Senegal, Côte d’Ivoire, Mali, Benin, Togo, Burkina Faso, or Niger may already operate in XOF-denominated pricing and accounting.

The country calling code is +245, which is used for international calls into Guinea-Bissau from Europe, the Americas, and elsewhere in Africa. The listed languages are pt-GW (Portuguese as used in Guinea-Bissau) and pov (Guinea-Bissau Creole); Portuguese is important for administration and formal communication, while Creole is widely used in everyday life and local coordination.

Daylight Saving Time in Guinea-Bissau

Guinea-Bissau does not observe daylight saving time (DST), so clocks do not move forward in spring or backward in autumn. The country remains on UTC+0 all year, which makes it easier to schedule recurring calls, shipping updates, and cross-border operational handoffs without worrying about domestic clock changes.

There are no seasonal clock-change dates in Guinea-Bissau because DST is not part of current national policy. In contrast, countries you compare with may change their clocks: for example, the United Kingdom typically moves to British Summer Time on the last Sunday in March and returns to GMT on the last Sunday in October, while Portugal mainland follows the same European DST pattern, so the time gap with Guinea-Bissau can shift during the year.

There are also no regional exceptions within Guinea-Bissau: Bissau, inland regions, and island communities all use the same time standard. This uniformity is useful for domestic aviation, ferry schedules, government services, and NGO operations because a published local time means the same thing everywhere in the country.

Frequently Asked Questions

how many time zones does Guinea-Bissau have?

Guinea-Bissau has one time zone for the entire country. All regions, including the capital Bissau and the coastal island areas, follow GMT / UTC+0, so there are no internal time differences to account for when arranging domestic travel or national meetings.

does Guinea-Bissau use daylight saving time?

No, Guinea-Bissau does not use daylight saving time. The country stays on UTC+0 year-round, so clocks do not change in March, October, or any other month, unlike many European countries that shift between standard time and summer time.

what is the time difference between Guinea-Bissau and UTC?

Guinea-Bissau is on UTC+0, which means there is no time difference between Guinea-Bissau local time and Coordinated Universal Time. When it is 12:00 UTC, it is also 12:00 PM in Bissau, making it one of the simpler time zones for international coordination.

what currency does Guinea-Bissau use?

Guinea-Bissau uses the West African CFA franc, abbreviated XOF. This is a shared regional currency used by several West African countries, which helps facilitate trade and financial transactions within the WAEMU economic area.

what is the dialing code for Guinea-Bissau?

The international dialing code for Guinea-Bissau is +245. If you are calling Bissau from abroad, you would dial your international access prefix, then 245, followed by the local number assigned within Guinea-Bissau’s telephone network.

what time zone is Bissau, Guinea-Bissau in?

Bissau, the capital of Guinea-Bissau, uses GMT (Greenwich Mean Time) with an offset of UTC+0. Because the entire country follows the same standard and does not observe DST, the time in Bissau is stable throughout the year.

is Guinea-Bissau on the same time as London?

Guinea-Bissau matches London only during the part of the year when the UK is on GMT, typically from late autumn to late March. When the UK switches to British Summer Time (UTC+1), Guinea-Bissau remains on UTC+0, so Bissau becomes 1 hour behind London until the UK returns to standard time.

is Guinea-Bissau on the same time as Portugal?

Guinea-Bissau is on the same time as mainland Portugal only during Portugal’s winter standard time, when Portugal is on UTC+0. During Portuguese daylight saving time, usually from the last Sunday in March to the last Sunday in October, mainland Portugal moves to UTC+1, so Guinea-Bissau is then 1 hour behind.