# Georgetown in September: weather

Georgetown, Guyana (South America). Ten-year climatology (2015-2024), not a forecast. Page: https://beaufixe.net/en/weather/georgetown/september

## Key figures

| Indicator | Value |
|---|---|
| Afternoon (mean daily max) | 30.4 °C |
| Night (mean daily min) | 25.6 °C |
| Sea (surface) | 29.8 °C |
| Rainy days (≥ 1 mm) | 20 / month |
| Relative humidity | 83 % |
| Probability of a 25 °C+ afternoon | 100 % |

## Month by month

| Month | Afternoon | Night | Sea | Rain (d) |
|---|---|---|---|---|
| January | 27.7 °C | 24.2 °C | 27.3 °C | 23 |
| February | 27.8 °C | 24.5 °C | 27.3 °C | 21 |
| March | 28.4 °C | 24.7 °C | 27.7 °C | 20 |
| April | 28.7 °C | 25 °C | 28 °C | 21 |
| May | 28.3 °C | 24.7 °C | 28.1 °C | 29 |
| June | 28.2 °C | 24.3 °C | 28.4 °C | 29 |
| July | 28.7 °C | 24.3 °C | 29 °C | 30 |
| August | 29.6 °C | 24.9 °C | 29.5 °C | 25 |
| September | 30.4 °C | 25.6 °C | 29.8 °C | 20 |
| October | 30.1 °C | 25.8 °C | 29.6 °C | 19 |
| November | 29.3 °C | 25.2 °C | 29 °C | 23 |
| December | 28.1 °C | 24.5 °C | 28.1 °C | 27 |

Best months : October, March, September.

## Before you go

- **Safety** : No specific restrictions. Usual precautions apply. (official advice updated 30 December 2025 — https://www.gov.uk/foreign-travel-advice/guyana)
- **Entry** (British passport) : No visa needed for stays of up to 30 days. Passport valid for at least 6 months. One-month extensions from immigration; overstaying can mean prison, a fine and deportation; yellow fever certificate if coming from a risk country. (per the UK Foreign Office, 30 December 2025)
- **Vaccines** : typhoid recommended for most travellers; hepatitis A and hepatitis B if you are not already vaccinated. Routine vaccines up to date (measles in particular).
- **Yellow fever** : Vaccine recommended for the whole country. Certificate required only if you arrive from a country with yellow fever risk.
- **Malaria** : Present. Areas: All Rare cases in the cities of Georgetown (the capital) and New Amsterdam. Preventive medication recommended: All areas (except the cities of Georgetown and New Amsterdam): Atovaquone-proguanil, doxycycline, mefloquine, tafenoquine Cities of Georgetown and Amsterdam: No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only) — prescribed before departure.
- **Mosquitoes** : dengue and Zika reported: protect yourself from bites.
  (per the CDC, page reviewed 3 September 2026 — https://wwwnc.cdc.gov/travel/destinations/traveler/none/guyana)

## Sources

Air, rain, humidity: ERA5-Land reanalysis (Copernicus) served by Open-Meteo (CC BY 4.0). Sea: NOAA OISST. Safety: FCDO (OGL v3), zones reviewed by Beau Fixe. Entry: France Diplomatie (Licence Ouverte 2.0) / FCDO. Health: CDC (public domain). Details: https://beaufixe.net/en/legal#sources

Beau Fixe — https://beaufixe.net — not a forecast; only the authorities are authoritative for safety, entry rules and health.