September has been a busy month for watch releases, with brands ranging from Timex, Casio, Rolex and Audemars Piguet putting fresh designs on their shelves. The new watch arrivals are strikingly varied: there are tool watches built for the water, a G-Shock that treats metal almost like jewellery, a Rolex with a sophisticated annual calendar and even a new take on the Royal Oak created with Serena Williams. Here are 5 new watches launched in September 2026 including the Timex Deepwater Meridian 200 HEV Automatic, the Casio GST-W1000, the Rolex Perpetual Padellone, the Audemars Piguet Serena Williams Royal Oak and the Zenith Chronomaster Solo Sport.
The latest Timex Deepwater is aimed at the world beneath the surface. The 44mm dive watch comes in silver-white with a stainless-steel bracelet or metallic blue with an HNBR rubber strap. Both offer 200 metres of water resistance, sapphire crystal, Super-LumiNova and an automatic helium escape valve. Inside is a Miyota 8215 movement with a 40-hour power reserve.
The G-Shock GST-W1000 gives Casio's tough watch a polished personality. Introduced on September 9, it uses multi-component stainless-steel construction with multiple surface finishes, while nano-processing creates a three-dimensional effect on the dial. It also features Tough Solar power, Bluetooth and automatic time correction, with black, blue and green dial options.
The Rolex Perpetual Padellone was introduced on September 15. The name references the vintage Ref. 8171, but the watch itself is modern, pairing an instantaneous annual calendar with day, date and month indications plus a moonphase display. At 39mm, it is offered in 18-carat Everose gold or 950 platinum and houses the new Calibre 7190.
Audemars Piguet has added a Royal Oak through its collaboration with Serena Williams. The 38mm limited edition combines a white ceramic case and bracelet with a pink mother-of-pearl dial. It is powered by the in-house Calibre 6401 and pairs its chronograph with an instant-jump date. Only 500 are being made.
Zenith has taken the El Primero concept in a quieter direction with the new Chronomaster Solo Sport. Unveiled on September 2, the 40mm model trades the chronograph layout for three-hand timekeeping while retaining the movement family's 5Hz high-frequency character. The collection comes with ceramic dials and bezels in black, white and brown, while a black no-date version offers a cleaner look.
The appeal of September's new watch releases is the range. These aren't 5 variations on the same idea: Timex is building a mechanical dive watch, Casio is refining G-Shock's metal language, Rolex is introducing a new calendar complication, AP is putting a collaborative spin on the Royal Oak, and Zenith is simplifying an icon without abandoning its high-frequency identity.